noveltieS for the bryoPhyte flora of chaco

Province, north of argentina

novedadeS Para la flora de briófitoS de la Provincia de chaco,

norte de argentina

1

Soledad Jimenez

Summary

Background and aim: Bryophytes are an important group of plants in forest

1

.InstitutodeBotánicadelNordeste

ecosystems that act as primary colonizers, moisture regulators and nutrient ﬁxers.

Due to their sensitivity to disturbance, they are used as bioindicators in impact

studies. Nevertheless, there are extensive areas poorly studied that currently are

undergoing signiﬁcant changes due to agricultural and livestock practices, as is

the case in Chaco. As part of a major project which aims to determine the impact

on land-use change on the bryophyte diversity in Chaco, samples collected in the

region have been analyzed with the aim of updating knowledge of the bryophyte

ﬂora in the province.

(

CONICET-UNNE), Corrientes,

Argentina. Facultad de Ciencias

Exactas, Naturales y Agrimensura,

Corrientes, Argentina. Consejo

Nacional de Investigaciones

Científicas y Técnicas (CONICET),

Argentina

M&M: Samples from preserved and non-preserved areas from Chaco were studied

according to the traditional techniques for bryophytes and mounted in water-

glycerin-phenol or Hoyer´s solution.

Results: As a result, 26 species distributed in 19 genera and 13 families, are newly

recorded to Chaco province.

Conclusions: The results improved our understanding of a poorly explored ﬂora in

a region with unique characteristics. These ﬁndings reinforce the value of ﬂoristic

studies to collect data about poorly known species and their distribution, and to

provide a basis for applied studies. In Argentina, despite eﬀorts made in recent

decades, there is still a lack of understanding regarding bryophyte diversity. This,

combined with rapid changes in land use, may lead to the alteration or disappearance

of bryophyte communities before they are even studied.

*

msoledadjimenez@exa.unne.edu.ar

Citar este artículo

JIMENEZ, S. 2024. Novelties for the

bryophyte flora of Chaco province,

North of Argentina. Bol. Soc. Argent.

Bot. 59(4): 1-16. Versión en línea.

DOI: https://doi.

org/10.31055/1851.2372.v59.

n4.44697

Key wordS

Argentina; Chaco; Fissidentaceae, Frullaniaceae, Pottiaceae, Sematophyllaceae.

reSumen

Introducción y objetivo: Los brióﬁtos son un grupo importante de plantas en

ecosistemas boscosos, que actúan como colonizadores primarios, reguladores

de humedad y ﬁjadores de nutrientes. Debido a su sensibilidad ante disturbios,

son utilizados como bioindicadores en estudios de impacto. Sin embargo, existen

extensas áreas escasamente estudiadas que están sufriendo cambios debido a las

prácticas agrícolas y ganaderas, como ocurre en Chaco. En el marco de un proyecto

mayor cuyo objetivo es determinar el impacto del cambio en el uso del suelo sobre

la diversidad briofítica del Chaco, se analizaron las especies recolectadas en la

región con el ﬁn de actualizar el conocimiento de esta ﬂora en la provincia.

M&M: Ejemplares provenientes de áreas protegidas y no protegidas de Chaco fueron

estudiados de acuerdo a técnicas tradicionales para brióﬁtos, y montados en agua-

glicerina-fenol o solución de Hoyer.

Resultados: Como resultado, 26 especies, distribuidas en 19 géneros y 13 familias,

son registrados como nuevos para la provincia del Chaco.

Conclusiones: Los resultados mejoran nuestra comprensión de una ﬂora poco

explorada en una región de características singulares. Estos hallazgos refuerzan

el valor de los estudios ﬂorísticos para recopilar datos de especies poco conocidas

y su distribución, y proporcionar una base para estudios aplicados. En Argentina,

pese a los esfuerzos realizados en las últimas décadas, aún existen vacíos en

el conocimiento sobre la diversidad de brióﬁtos. Esto, combinado con los rápidos

cambios en el uso del suelo, puede llevar a la alteración o desaparición de

comunidades de brióﬁtos antes de que sean estudiadas.

Recibido: 9 Abr 2024

Aceptado: 28 Jun 2024

Publicado en línea: 10 Dic 2024

Publicado impreso: 31 Dic 2024

Editor: Guillermo M. Suárez

PalabraS clave

Argentina; Chaco; Fissidentaceae, Frullaniaceae, Pottiaceae, Sematophyllaceae.

ISSN versión impresa 0373-580X

ISSN versión on-line 1851-2372

1

Bol. Soc. Argent. Bot. 59 (4) 2024

introduction

In Argentina, the current checklists of mosses

Matteri, 2003), hornworts and liverworts

(

The province of Chaco in the North of (Hässel de Menéndez & Rubies, 2009) register

Argentina, together with 12 another political 20 species of mosses and seven species of

provinces, constitutes the Chaco ecoregion liverworts from the Chaco province. Despite

(

Cabrera, 1976; Oyarzabal et al., 2018). Within the efforts made in the last decades by the

this ecoregion, two districts (Eastern and specialists to increase the knowledge of the

Western) are recognized according to their bryophyte flora in the country (Colotti et al.,

rainfall regime and floristic composition, 2013, 2016, 2019; Suárez et al., 2014, 2023;

and both are present in the Chaco province. Jimenez et al., 2015, 2020, 2023; Cottet et al.,

The Eastern district has a humid climate 2016; Colotti & Suárez, 2017, 2018; Cabral et

with an annual rainfall of 1200 mm, with al., 2020; Valdés et al., 2021; Alvarez et al.,

a predominance of Schinopsis balansae 2023a, b) there still remain areas poorly known.

Engl. (Spanish name “quebracho colorado The aim of this work is to update the knowledge

chaqueño”), while the western district has a dry of the bryophytes of Chaco province through

climate with an annual rainfall not exceeding the analysis of herbarium specimens, and new

5

00 mm, with a predominance of Schinopsis collections carried out in preserved and non-

lorentzii (Griseb.) Engl. (Spanish name preserved areas along the province. As result,

quebracho colorado santiagueño”) (Burkart 26 species of bryophyte (25 mosses and one

et al., 1999; Naumann, 2006; Salgado et al., liverwort) are added to the known flora of the

014). Due to the high suitability of the area for region.

“

2

agricultural production, this ecoregion is one

of the most active frontiers of land use change

in the country, and conflicts with biodiversity material and methodS

conservation are increasing (Marinaro & Grau,

2

015). The role of biodiversity knowledge is

Samples examined were collected in

of great value, both for scientific studies and protected areas: Parque Nacional Chaco,

for the development of conservation strategies. Reserva Natural Cutural Caraguatá, Parque

However, given the low number of studies aimed Nacional El Impenetrable, Reserva Natural

at understanding biodiversity and the high rate Educativa Colonia Benítez, and non-protected

of modification of natural ecosystems, there is areas: Estancia La Media Legua (J.J. Castelli),

a considerable risk of biodiversity loss before Estancia Catalina (Miraflores) under different

it can be described, recorded, or monitored land uses along the province (Fig. 1).

(

Gradstein & Sporn, 2010). Therefore, floristic Additional samples from the BAH collection

studies that allow the updating of species lists at CTES herbarium from the region have been

in a region are of fundamental importance analyzed. A total of 130 samples from Chaco

(

Giorgis et al., 2011).

were analyzed. The specimens were studied

Bryophytes are an important group of plants morphologically using classical techniques for

in forest and woodland ecosystems, as they bryophytes and mounted in water-glycerin-

participate as primary colonizers, moisture phenol or Hoyer’s solution (Anderson, 1954).

regulators and nutrient fixers (Hallingbäck & Microscopic characters were studied by using

Hodgetts, 2000; Glime, 2007). Due to their the LM Arcano XSZ-100BNT. Color reaction

sensitivity to disturbance, they are increasingly with KOH 2% was performed on the Pottiaceae

used as bioindicators in impact studies (Acebey family (Zander, 1993). The nomenclatural

et al., 2003; Turetsky, 2003). Nevertheless, status of each species was verified using

there are still extensive areas that remain poorly the Tropicos MOBOT database and specific

studied and are currently undergoing significant bibliographies for each taxon. One specimen

changes due to progress in agricultural and was selected to represent each locality were the

livestock practices, such as the Chaco province. species was recorded.

2

S. Jimenez - Novelties on bryophytes from Chaco, Argentina

Fig. 1. Map of the sampling locations in Chaco Province, North of Argentina.

reSultS

Taxonomic treatment

A total of 26 bryophyte species are added to Chaco Province.

Key to the newly recorded species from Chaco

1. Plants with leaves diﬀerentiated into lobe and lobule, lobule laminate; underleaves present. Perianth 4-keeled.

Frullania platycalyx

1

'. Plants without the above combination of characters.

2

. Plants glaucous-green; laminal cells alternating between leucocyst and chlorocyst cells.

Octoblepharum albidum

2

'. Plants green, yellowish-green or brown; laminal cells uniform, not alternating between leucocyst and

chlorocyst cells.

3

. Stems usually erect, solitary or in tufts or cushions; sporophytes terminal on stems or branched

innovations.

4

. Leaves arranged in 2 rows, leaves exhibiting an extended dorsal and ventral lamina from a

vaginant laminae.

5

. Leaves elimbated; laminal cells pluripapillose, upper part of costa obscured by bulging

chlorophyllose cells.

Fissidens brevipes

5

'. Leaves limbated; laminal cells smooth to unipapillose.

6

. Leaves bordered all around, laminal cells smooth.

Fissidens crispus

6

'. Leaves bordered on the vaginant laminae, laminal cells unipapillose.

Fissidens submarginatus

'. Leaves arranged in 3 or more rows, without above combinations of characters.

4

7

. Leaves progressively crowded at the apex of the stem, unistratose; laminal cells smooth;

capsule cupulate, mouth ﬂared when deoperculate, calyptra mitrate, peristome absent.

3

Bol. Soc. Argent. Bot. 59 (4) 2024

8

. Leaves oblong-spathulate, costa subpercurrent, margin serrulate in upper ½; capsule

immersed, neck inconspicuous.

Physcomitrium lorentzii

8

'. Leaves obovate-spathulate to lanceolate, costa ending 2-3 cells below apex; capsule

exserted, neck well-diﬀerentiated.

Physcomitrium subsphaericum

7

'. Leaves distributed homogeneously along the stem, uni or bistratose; laminal cells uni to

pluripapillose; capsule globose to cylindrical, calyptra cucullate, peristome double, reduced

or absent.

9

. Plants epiphytic; stem pinnately branching; leaves ecostated, lamina unistratose, laminal

cells smooth; capsule short exserted, seta short, peristome absent.

1

0. Plants rather delicate, dark-green; stem regularly pinnately branched; leaves oval, apex

acuminate; seta short (= 2 mm long).

Braunia exserta

0'. Plants robust, yellowish-green; stem irregularly pinnately branched; leaves oblong,

apex of distal leaves ending in a hyaline mucro; seta long (4-6 mm long).

Braunia cirrhifolia

9

'. Plants on various substrates; stem variously branching; leaves costate, lamina uni to

pluristratose, laminal cells bulging to uni/pluripapillose; capsule immersed to exserted,

seta long, peristome double, simple or reduced.

11. Costa with a single stereid band.

12. Plants forming deep cushions, yellowish green above, brown below; KOH color reaction

of upper laminal cells yellow or orange; stem central strand present, usually strong.

1

3. Leaves ligulate, apex obtuse ending in a mucro, margin recurved, laminal cells

superﬁcially convex on both sides; guide cells 2-4 in 1-2 layers.

Pseudocrossidium arenicola

3'. Leaves lanceolate, apex acuminate, margin strongly revolute, laminal cells

bulging-mammillose ventrally, ﬂat dorsally; guide cells more than 6 in several

layers.

Gertrudiella uncinicoma

1

2'. Plants forming turf, green above, reddish brown below; KOH color reaction of

upper laminal cells brick red; stem central strand present or absent.

1

4. Lamina bistratose distally; propagules absent.

Syntrichia chisosa

4'. Lamina distally unistratose; propagules present (brood leaves in clusters)

Syntrichia ammonsiana

1

11'. Costa with two stereid bands.

1

5. Leaves oblong-lanceolate to elliptic, margin plane, dorsal costal epidermis present.

1

6. Stem central cylinder present; basal laminal cells diﬀerentiated straight across

leaf; laminal cells bulging-mammillose ventrally, weakly convex dorsally.

Hyophyla involuta

1

6'. Stem central cylinder present or absent; basal laminal cells diﬀerentiated across

leaf in a v-shaped area; laminal cells papillose; papillae 3-6 per lumen

Tortella humilis

4

S. Jimenez - Novelties on bryophytes from Chaco, Argentina

1

5'. Leaves ligulate, margin plane to incurved; dorsal costal epidermis absent.

1

7. Leaves ligulate-lanceolate, margin plane.

Trichostomum brachydontium

1

7'. Leaves ligulate, margin incurved to involute.

Weissia controversa

3

'. Stems creeping or spreading forming mats or wefts; sporophytes lateral on stems.

18. Leaves complanate or not; leaf costa absent or short and forked, laminal cells smooth.

19. Leaves complanate to loosely complanate, lanceolate to oblong-lanceolate, costa absent or short

and forked, laminal cells linear to linear-hexagonal, alar cells absent or weakly diﬀerentiated.

2

0. Plants pale green; leaves oblong-lanceolate, costa absent, laminal cells linear-hexagonal.

Leucomium strumosum

0'. Plants glossy green; leaves lanceolate, costa short and forked, weak, laminal cells linear.

Isopterygium tenerum

1

9'. Leaves not complanate, lanceolate to ovate-lanceolate, costa absent, laminal cells

rhomboidal to linear, alar cells well-diﬀerentiated.

2

1. Leaves lanceolate, laminal cells long-rhomboidal, alar cells more or less inﬂated.

Sematophyllum adnatum

2

1'. Leaves ovate-lanceolate, laminal cells linear to linear-ﬂexuose, alar cells enlarged and

colored.

Sematophyllum subsimplex

1

8'. Leaves not complanate; leaf costa single, laminal cells smooth to bulging-mamillose.

2

2. Plants brownish-green, forming dense tangled mats; leaves lanceolate, keeled; costa

percurrent; laminal cells bulging-mamillose; peristome reduced, calyptra mitrate, weakly

hairy.

Macrocoma tenuis subsp. sullivantii

2

2'. Plants light to dark green, forming lax to dense mats; leaves lanceolate to ovate-lanceolate;

costa reaching above midleaf; laminal cells smooth; peristome complete, calyptra cucullate,

smooth.

2

3. Plants dark green; leaves ovate-lanceolate, costa ending below the apex, laminal cells

rhomboidal.

Leskeadelphus angustatus

2

3'. Plants light green; leaves lanceolate to ovate-lanceolate, costa reaching midleaf to

subpercurrent, laminal cells linear to fusiform.

2

4. Leaves ovate-lanceolate, apex acuminate, twisted; margin serrulate; costa reaching ¾

the leaf length, projecting as a small spine; laminal cells linear.

Rhynchostegium serrulatum

2

4'. Leaves lanceolate to ovate-lanceolate, apex acute, not twisted; margin entire to

serrate; costa reaching ½ to ¾ the leaf length, not projecting as a spine; laminal cells

broadly fusiform.

2

5. Leaves lanceolate, margin entire to weakly serrulate, costa reaching midleaf.

Entodontopsis leucostega

25'. Leaves ovate-lanceolate, margin serrulate to serrate, costa extending 2/3 the leaf length.

Entodontopsis cultelliformis

5

Bol. Soc. Argent. Bot. 59 (4) 2024

Marchantiophyta. Frullaniaceae

3. Braunia exserta Müll. Hal., Linnaea 42: 379.

. Frullania platycalyx Herzog, Feddes Repert. 1879.

Braunia exserta can be distinguished from B.

1

Spec. Nov. Regni Veg. 55: 10. 1952.

Diagnostic characters of F. platycalyx include the cirrhifolia by the slender size of the plants and the

presence of laminate lobules, and underleaf margins shorter length of the seta in the former.

plane without a tooth (Gradstein & Costa, 2003;

Lima, 2019). It was found growing in intermixed

mats with Forsstroemia producta (Hornsch.) Paris.

Distribution and habitat. This species is found

in the Neotropics, and was recorded in Brazil and

Argentina (Biasuso, 1993; Fuertes et al., 2015). In

Distribution and habitat. In South America, Argentina, it has been reported in the northwest of

F. platycalyx is distributed in southern Brazil, the country, in Tucumán and Jujuy (Biasuso, 1993).

Argentina, and Paraguay (Gradstein & Costa, 2003; Its distribution range extends to the northeast of the

Cañiza et al., 2017; Lima, 2019). In Argentina, country, in the province of Chaco.

F. platycalyx has previously been recorded from

Buenos Aires and Misiones (Hässel de Menéndez

Rubies, 2009).

Specimens examined. ARGENTINA. Prov.

Chaco: Dpto. General Güemes, Juan José Castelli,

Ea. La Media Legua, 25°47´18.58´´ S, 60° 32´

&

Specimens examined.ARGENTINA. Prov. Chaco: 2.78´´ W, lote 6, en ramas caídas de Quebracho

Dpto. General Güemes, Juan José Castelli, a 2 km del blanco entre hojarasca, abundante, sombrío y

empalme de ruta 5 y 9, 25° 54´ 40.19´´ S, 60° 37´ húmedo, 20-VII-2022, Jimenez & Jimenez 694

2

8.98´´ W, cortícola, abundante, soleado y húmedo, (CTES).

6-II-2011, Jimenez & Jimenez 91a (CTES).

Bryophyta. Stereophyllaceae

Bryophyta. Hedwigiaceae

4. Entodontopsis cultelliformis (Sull.) B.H. Allen,

2

. Braunia cirrhifolia (Mitt.) A. Jaeger, Ber. Monogr. Syst. Bot. Missouri Bot. Gard. 132: 272.

Thatigk. St. Gallischen Naturwiss. Ges. 2: 87. 1876. 2018.

This taxon includes robust plants with irregularly

This taxon is characterized by the complanate-

pinnate branching, 4-plicate leaves, acuminate foliate disposition of leaves, ovate-lanceolate

apices ending in a hyaline mucro in distal leaves, leaves with serrate margins at the apex and serrulate

revolute margins, and sporophyte with a seta well- at the base, and costa reaching 1/3 of the lamina

developed (Biasuso, 1993).

length and ending in a spine (Allen, 2018).

Distribution and habitat. Braunia cirrhifolia

Distribution and habitat. This species

is a South American species registered in Bolivia, is distributed in the Americas from Mexico to

Paraguay, Peru and Argentina (Hermann, 1976; Argentina (Matteri, 2003; Allen, 2018). It was

Menzel, 1992; Biasuso, 1993; O’Shea & Price, previouslyrecordedinthecountryasEulacophyllum

2

008). InArgentina, the species has been recorded in cultelliforme (Sull.) W. R. Buck & Ireland from

the central and northwestern regions of the country, Misiones and Corrientes (Matteri, 2003).

from Córdoba, Salta and Tucumán (Matteri, 2003).

The distribution range of the species extends to

northeastern Argentina, to the province of Chaco.

Specimens examined. ARGENTINA. Prov.

Chaco: Dpto. Presidencia de la Plaza, Parque

Nacional Chaco (26° 47´ 40.24´´S, 59° 37´ 6.76´´

Specimens examined. ARGENTINA. Prov. W), cortícola, abundante, sombrío y húmedo, 7-IV-

Chaco: Dpto. Presidencia de la Plaza, Parque 2011, Jimenez & Martín 173 (CTES). Dpto. Primero

Nacional Chaco, 26° 47´ 40.24´´ S, 59° 37´ 6.76´´ de Mayo, Reserva Educativa Colonia Benítez (27º

W, en la “ralera”, sobre Quebracho, abundante, 19´ 06.02´´ S, 58º 56´´ 58.27´´ W), cortícola sobre

húmedo y soleado, 21-I-2012, Jimenez & Martín raíz de “espina corona”, abundante, sombrío y

3

15 (CTES).

húmedo, 14-IV-2012, Jimenez et al. 405 (CTES).

6

S. Jimenez - Novelties on bryophytes from Chaco, Argentina

5

. Entodontopsis leucostega (Brid.) W. R. Buck & slightly below the apex, and laminal cells irregularly

Ireland, Nova Hedwigia 41: 103. 1985.

hexagonal, bulging, and smooth (Pursell, 2007; Taha

&

Shabbara, 2019).

This species is easily recognized by the presence

of lanceolate leaves with costa reaching the midleaf,

Distribution and habitat. Fissidens crispus is

elongate and smooth laminal cells, entire margins, a pantropical species distributed from the Paciﬁc

and larger alar cells (Buck, 1998).

Coast of the United States, Mexico, CentralAmerica,

SouthAmerica, northernAfrica, and Europe (Pursell,

Distribution and habitat. Entodontopsis 2007). This species colonizes moist soil of trails,

leucostega is a widely distributed species recorded banks, rocks, rotting logs, and limestone boulders

from Africa, America, and Asia (Buck, 1998). In (Pursell, 2007; Taha & Shabbara, 2019). It has been

Argentina, this species has been registered in Salta, recorded in Corrientes, Misiones, Santa Fe and

Jujuy, and Misiones (Matteri, 2003).

Tucumán (Matteri, 2003; Alvarez & Villalba, 2021;

Filippa & Villalba, 2021; Alvarez et al., 2023). In

Specimens examined. ARGENTINA. Prov. Chaco, this taxon was collected profusely fructiﬁed

Chaco: Dpto. General Güemes, Parque Nacional El at P.N. El Impenetrable, alongside the road leading to

Impenetrable (25° 10´ 38.0´´ S, 61° 05´ 44.5´´W), the trails, in mixed mounds with Pottiaceae species

cortícola, 10-V-2019, Serrano BZ1 (CTES).

under the bushes.

Bryophyta. Fissidentaceae

Specimens examined. ARGENTINA. Prov.

6

2

. Fissidens brevipes Besch., J. Bot. (Morot) 5: Chaco: Dpto. General Güemes, Parque Nacional

52. 1891.

El Impenetrable (25° 01´ 28.2´´ S, 60° 55´ 45.5´´

W), terrícola formando montículos mixtos con

Diagnostic characters include the presence of Anaschisma lilliputanum al borde del camino, bajo

papillose laminal cells and costa obscured at the arbustos, 11-VI-2023, Jimenez et al. 766b (CTES).

apex by chlorophyllose cells (Pursell, 2007).

Dpto. Presidencia de la Plaza, Parque Nacional

Chaco (26° 47´ 40.24´´ S, 59° 37´ 6.76´´ W),

Distribution and habitat. Fissidens brevipes is terrícola, en la base de arbolito, escaso, húmedo y

a South American species distributed in Argentina, sombrío, 22-I-2012, Jimenez & Martín 307 (CTES).

Brazil, Guyana, and Paraguay (Matteri, 2003; Dpto. Primero de Mayo, Reserva Educativa Colonia

Pursell, 2007). In Argentina, this species has been Benítez (27º 19´ 06.02´´ S, 58º 56´ 58.27´´ W),

previously recorded in Formosa and Misiones terrícola en sendero, abundante, húmedo y sombrío,

(Matteri, 2003).

14-IV-2012, Jimenez et al. 411 (CTES).

Specimensexamined.ARGENTINA. Prov. Chaco: 8. Fissidens submarginatus Bruch, Flora 29: 133.

Dpto. Presidencia de la Plaza, Parque Nacional 1846.

Chaco (26° 47´ 40.24´´ S, 59° 37´ 6.76´´ W), al

borde del Río Negro, cortícola, abundante, soleado,

Fissidens submarginatus is recognized by the

seco, 21-I-2012, Jimenez & Martín 292a (CTES). presence of a well-deﬁned limbidium extending

Dpto. Primero de Mayo, Reserva Educativa Colonia along the vaginant laminae, and by laminal cells

Benítez (27º 19´ 06.02´´ S, 58º 56´ 58.27´´ W), bulging-papillose, with a single sharp papilla over

cortícola sobre raíz aﬂorante, con Rhynchostegium the lumen (Bordin & Yano 2013, Cabral et al. 2020).

serrulatum, escaso, húmedo y sombrío, 14-VI-2012,

Jimenez et al. 404b (CTES).

Distribution and habitat. Fissidens submarginatus

isanAfro-Americanspeciesregisteredonthecontinent

7

. Fissidens crispus Mont., Ann. Sci. Nat., Bot, sér. from the United States to southern Paraguay, Brazil,

2

, 9: 57. 1838.

and Argentina (Pursell 2007; Cabral et al. 2020). This

taxon inhabits soil, rock, or termite mounds, as well

Diagnostic characters of F. crispus include tightly as at the bases of decomposing trunks and branches

crispate leaves when dry, with limbate margins ending (Bordin & Yano 2013, Cabral et al. 2020).

7

Bol. Soc. Argent. Bot. 59 (4) 2024

Specimens examined. ARGENTINA. Prov. Europe and Oceania (Allen, 2002). In Argentina,

Chaco: Dpto. Primero de Mayo, Reserva Educativa this taxon has been recorded from Misiones and

Colonia Benítez (27º 19´ 06.02´´ S, 58º 56´ 58.27´´ Tucumán (Matteri, 2003; Ellis et al., 2023).

W), terrícola al borde del sendero, abundante,

húmedo y sombrío, con F. crispus, 14-VI-2012,

Jimenez et al. 418a (CTES).

Specimens examined. ARGENTINA. Prov.

Chaco: Dpto. General Güemes, Parque Nacional

El Impenetrable (25° 01´ 28.2´´ S, 60° 55´ 45.5´´

W), terrícola, V-2019, Serrano BZ5a (CTES);

Bryophyta. Pottiaceae

9. Gertrudiella uncinicoma (Müll. Hal.) G. M. Miraﬂores, Ea. Catalina (25º 26´ 49.08´´ S, 61º

Suárez & Schiavone, Bryologist 113: 679. 2010.

32´ 36.29´´ W), cortícola en base de Quebracho

colorado, escaso, sombrío, 19-VII-2022, Jimenez et

Gertrudiella uncinicoma is distinguished by al. 679 (CTES).

the presence of a well-developed central cylinder

at the stem, leaves strongly curled when dry, and Bryophyta. Pylaisiadelphaceae

guide cells of the costa distributed in 3-4 layers 11. Isopterygium tenerum (Sw.) Mitt., J. Linn.

(Jimenez & Suárez, 2017). In Chaco province, the Soc., Bot. 12: 499. 1869.

species forms extensive and dense cushions on

soil, intermixed with Selaginella sp. and Hyophila

These small, slender plants are recognized by

involuta (Hook.) A. Jaeger, in both preserved and the complanate disposition of the leaves, ovate and

disturbed areas.

concave with an acuminate apex, plane margins, a

short and double costa, alar cells well-diﬀerentiated,

Distribution and habitat. Gertrudiella and linear laminal cells (Buck, 1998; Allen, 2018). It

uncinicoma is a Neotropical species from Argentina, was found growing on soil at the base of a palm tree,

Bolivia, Chile, Peru and Paraguay (Schiavone & but it colonizes all types of substrates.

Suárez, 2003; Suárez & Schiavone. 2005, 2010;

Jimenez & Suárez, 2017). In Argentina, it has been

Distribution and habitat. This species is widely

recorded from Córdoba, Jujuy, Salta, Santiago del distributed in the Americas, from eastern North

Estero, and Tucumán (Schiavone & Suárez, 2003; America to Central and South America (Sharp et

Suárez & Schiavone, 2005, 2010).

al., 1994; Churchill & Linares, 1995; Allen, 2018).

In Argentina, I. tenerum has been reported from

Specimens examined. ARGENTINA. Prov. Corrientes, Entre Ríos, Tucumán, Tierra del Fuego,

Chaco: Dpto. General Güemes, Miraflores, Ea. and Misiones (Matteri, 2003).

Catalina (25º 26´ 49.08´´ S, 61º 32´ 36.29´´ W),

terrícola formando amplios montículos al costado

Specimens examined. ARGENTINA. Prov.

del camino, abundante, sombrío, 19-VII-2022, Chaco: Dpto. General Güemes, Juan José Castelli,

Jimenez et al. 658b (CTES). Parque Nacional El a 13 km del empalme de ruta 5 y 9 (25° 51´

Impenetrable (25° 01´ 28.2´´ S, 60° 55´ 45.5´´ W), 58.33´´ S, 60° 42´ 23.07´´ W), al borde de laguna

terrícola, V-2019, Serrano BZ5b (CTES).

pequeña, en la base de palmera entre hierbas, sobre

tierra, abundante, sombrío y húmedo, 18-IX-2010,

1

0. Hyophila involuta (Hook.) A. Jaeger, Ber. Jimenez & Jimenez 69a (CTES).

Thatigk. St. Gallischen Naturwiss. Ges. 1: 202. 1873.

Bryophyta. Leskeaceae

Hyophila involuta is easily recognized by the 12. Leskeadelphus angustatus (Taylor) B. H.

oblong to ligulate shape of the leaves, with two Allen, Cat. Brio. Bolivia 192. 2009.

well-developed stereid bands in cross section, and

ventrally bulging laminal cells (Zander, 1993).

This taxon is recognized by the lack of

paraphyllia, ovate-lanceolate leaves with acuminate

Distribution and habitat. Hyophila involuta is apex, slender costa ending below the apex, smooth

widespread in the Americas, from southern North rhomboidal laminal cells, and well-diﬀerentiated

America, Central and South America, to Asia, alar cells (Allen, 2018).

8

S. Jimenez - Novelties on bryophytes from Chaco, Argentina

Distribution and habitat. The distribution range rounded and prominently bulging laminal cells

of this species extends from Mexico to southern (Sharp et al. 1994; Jimenez et al., 2020).

South America (Allen, 2018). In Argentina, this

species has been registered in Corrientes and

Distribution and habitat. Macrocoma tenuis

Salta as L. catenulatulus (Müll. Hal.) Herzog (=L. subsp. sullivantii is distributed in America and Asia

angustatus) (Matteri, 2003).

(Redfearn & Wu, 1986; Churchill & Linares, 1995;

Matteri, 2003; Valente et al., 2020). InArgentina, this

Specimens examined. ARGENTINA. Prov. taxon has been recorded in Corrientes and Santiago

Chaco: Dpto. Primero de Mayo, Reserva Educativa del Estero (Matteri, 2003; Jimenez et al., 2020).

Colonia Benítez (27º 19´ 06.02´´ S, 58º 56´ 58.27´´

W), cortícola en la base de árbol, abundante, sombrío

y húmedo, 14-IV-2014, Jimenez et al. 414 (CTES).

Specimens examined. ARGENTINA. Prov.

Chaco: Dpto. General Güemes, Juan José Castelli,

a 7 km del empalme de ruta 5 y 9 (25º 34´ 18.3´´

S, 60º 58´ 39.9´´ W), interior de monte, cortícola,

Bryophyta. Leucomiaceae

13. Leucomium strumosum (Hornsch.) Mitt., J. escaso, soleado, 18-IX-2010, Jimenez & Jimenez

Linn. Soc. Bot. 12:502. 1869.

64 (CTES). Dpto. Presidencia de la Plaza, Parque

Nacional Chaco (26° 47´ 40.24´´ S, 59° 37´ 6.76´´

Diagnostic characters of Leucomium strumosus W), en Quebrachal, cortícola sobre Quebracho,

include the lack of a central cylinder at the stem, abundante, seco y sombrío, 6-IV-2011, Jimenez &

ovate to oblong-ovate leaves, an acuminate apex, Martín 162 (CTES). Dpto. San Fernando, Reserva

margins entire and plane, costa absent, and long- Natural y Cultural Caraguatá (27º 23´ 16.7´´ S, 58º

rhomboidal to linear-hexagonal laminal cells (Buck, 58´ 49.9´´ W), cortícola sobre arbolito, abundante,

1998). sombrío, 2-IV-2011, Jimenez et al. 146 (CTES).

Distribution and habitat. Leucomium strumosus is Bryophyta. Octoblepharaceae

a pantropical species found inAmerica, from Mexico 15. Octoblepharum albidum Hedw., Sp. Musc.

to Panama, Colombia, Venezuela, Ecuador, Peru, Frond. 50. 1801.

Brazil, and Argentina (Sharp et al., 1994; Churchill

&

Linares, 1995, Buck, 1998). In Argentina, this

species has been recorded in Corrientes and Misiones by the glaucous-green coloration of the mats, the

Matteri, 2003). It is usually found growing on soil, ligulate leaves abruptly broadened at the base, and

rocks, and tree bases. the plane convex costa in transverse section, with

-3 layers of hyalocysts on either side of a medial

This taxon is easily distinguished in the ﬁeld

(

2

Specimens examined. ARGENTINA. Prov. layer of triangular chlorocysts (Allen, 1994; Cairns

Chaco: Dpto. Primero de Mayo, Reserva et al., 2020).

Educativa Colonia Benítez (27º 19´ 06.02´´ S,

5

8º 56´ 58.27´´ W), cortícola sobre madera en

descomposición, abundante, húmedo y sombrío, specieswithpantropicalandsubtropicaldistribution,

4-IV-2012, Jimenez et al. 401 (CTES). Dpto. San recorded in southern North America, Central and

Fernando, Reserva Natural Cultural Caraguatá South America, West, Central and South Africa,

27º 23´ 16.7´´ S, 58º 58´ 49.9´´ W), cortícola, Asia, and Australia (Allen, 1994; Cairns et al.,

escaso, soleado y seco, 2-IV-2011, Jimenez et al. 2020). In Argentina, this species has been found in

Distribution and habitat. It is a widespread

1

(

1

51 (CTES).

Misiones and Salta (Matteri, 2003).

Bryophyta. Orthotrichaceae

Specimens examined. ARGENTINA. Prov.

14. Macrocoma tenuis (Hook. & Grev.) Vitt subsp. Chaco: Dpto. Presidencia de la Plaza, Parque

sullivantii (Müll. Hal.) Vitt, Bryologist 83: 413.

Nacional Chaco (26° 47´ 40.24´´ S, 59° 37´ 6.76´´

W), cortícola en tronco caído al borde del sendero,

This species is distinguished by the brown-green abundante, soleado, algo húmedo, 22-I-2012,

color of the mats, and lanceolate keeled leaves with Jimenez & Martín 312 (CTES).

9

Bol. Soc. Argent. Bot. 59 (4) 2024

Bryophyta. Funariaceae

W), terrícola en borde de río, barro semi podrido,

1

4

6. Physcomitrium lorentzii Müll. Hal., Linnaea escaso, húmedo y sombrío, 21-I-2012, Jimenez &

2: 260. 1879. Martín 294 (CTES).

Diagnostic characters that distinguish P. lorentzii Bryophyta. Pottiaceae

include oblong-spathulate leaves with acuminate 18. Pseudocrossidium arenicola (Dusén) M.J.

apex, serrulate margins in the upper half, a costa Cano, Nova Hedwigia 102: 101. 2016.

that reaches ¾ of the length of the lamina, seta short

and immerse capsule (Colotti & Suárez, 2022).

Pseudocrossidium arenicola is characterized

by the presence of a single stereid band in the

Distribution and habitat. Physcomitrium transverse section of the leaf, and the costa

lorentzii is a South American species recorded from extended as an awn (Cano et al., 2016).

Argentina (Matteri, 2003; Colotti & Suárez, 2022),

Chile (Ireland et al., 2006) and Peru (Menzel,

992). In Argentina, this species has been registered species registered from Bolivia to Argentina. In

in Córdoba, Jujuy, and Salta (Matteri, 2003; Colotti Argentina, it has been recorded in Buenos Aires,

Suárez, 2022). Its distribution range extends Catamarca, Chubut, Jujuy, Salta, Santiago del

to the northeast of the country, in the province of Estero, and Tucumán (Cano et al., 2016; Jimenez

Distribution and habitat. It is a South American

1

&

Chaco.

et al., 2020). This taxon is often found growing in

extensive turfs on soil (Jimenez et al., 2020).

Specimens examined. ARGENTINA. Prov.

Chaco: Dpto. General Güemes, Juan José Castelli,

Specimens examined. ARGENTINA. Prov.

a 13 km del empalme de ruta 5 y 9 (25° 51´ 58.33´´ Chaco: Dpto. General Güemes, Miraﬂores, Ea.

S, 60° 42´ 23.07´´ W), en la base de palmera al Catalina (25° 26´ 49.08´´ S, 61° 32´ 36.29´´ W),

costado de laguna, sobre tierra, escaso, sombrío terrícola, formando amplios montículos al costado

y húmedo, 18-XI-2010, Jimenez & Jimenez 72 del camino, abundante y sombrío, 19-VII-2022,

(

CTES).

Jimenez et al. 686a (CTES).

1

7. Physcomitrium subsphaericum Schimp. ex Bryophyta. Brachytheciaceae

Müll. Hal., Syn. Musc. Frond. 2: 544. 1851.

19. Rhynchostegium serrulatum (Hedw.) Austin,

Musci Appalach. 58. 1870.

Physcomitrum subsphaericum diﬀers from P.

lorentzii mainly by the acute apex and subpercurrent

This taxon is characterized by the presence of

costa, and by the presence of an elongated seta that weakly complanate, lanceolate to ovate-lanceolate

exserts the capsule in the former.

leaves, scarcely diﬀerentiated between stem and

branches; margin serrulate, apex acuminate and

Distribution and habitat. This species is costa reaching ¾ of the lamina length (Buck, 1998;

distributed in North, Central, and South America, Allen, 2018; Cottet & Messuti, 2019).

from Mexico to Argentina, Brazil and Paraguay

(

Sharp et al., 1994; Matteri, 2003; O’shea & Price,

Distribution and habitat. Rhynchostegium

2

008; Cañiza et al., 2017; Dias et al., 2018, Colotti serrulatum is distributed in western and eastern

&

Suárez, 2022). In Argentina, this species has Canada, U.S.A, Mexico, Central America, the

been recorded in Corrientes, Entre Ríos, Santa Fe Caribbean; and throughout western, northern,

and Tucumán (Matteri, 2003; Filippa & Villalba, and southern South America including Argentina

2

021; Colotti & Suárez, 2022; Alvarez et al., and Uruguay (Sharp et al., 1994; Buck, 1998;

023).

Fuertes & Marchessi, 2013; Allen, 2018; Cottet &

Messuti, 2019). This species was ﬁrst recorded in

Specimens examined. ARGENTINA. Prov. Argentina by Cottet and Messuti (2019) in Chubut.

Chaco: Dpto. Presidencia de la Plaza, Parque Its distribution range extends to northeast, in the

Nacional Chaco (26° 47´ 40.24´´ S, 59° 37´ 6.76´´ Chaco province.

10

S. Jimenez - Novelties on bryophytes from Chaco, Argentina

Specimens examined. ARGENTINA. Prov. El Impenetrable (25º 10´ 22,9´´ S 61º 05´ 33,5´´

Chaco: Dpto. Primero de Mayo, Reserva Educativa W), en bosque de algarrobo con sotobosque

Colonia Benítez (27º 19´ 06.02´´ S, 58º 56´ 58.27´´ abierto y sombrío, cortícola sobre troncos talados

W), cortícola en raíz, formando matas mixtas con pero no en descomposición avanzada, húmedo,

Fissidens sp., 14-IV-2014, Jimenez et al. 404a abundante, 13-V-2019, Serrano BZ9 (CTES).

(

CTES).

Dpto. Presidencia de la Plaza, Parque Nacional

Chaco (26° 47´ 40.24´´ S, 59° 37´ 6.76´´ W),

cortícola, al costado del sendero, abundante,

Bryophyta. Sematophyllaceae

2

0. Sematophyllum adnatum (Michx.) E. Britton, sombreado y húmedo, 6-IV-2011, Jimenez &

Bryologist 5: 65. 1902. Martín 159 (CTES).

Diagnostic characters of S. adnatum include Bryophyta. Pottiaceae

lanceolate leaves gradually acuminate at the apex, 22. Syntrichia ammonsiana (H. A. Crum & L. E.

long-rhomboidal laminal cells, and alar cells more Anderson) Ochyra, Fragm. Florist. Geobot. 37:

or less inﬂated (Buck, 1998; Allen, 2018).

212. 1992.

Distribution and habitat. This species has been

Syntrichia ammonsiana is a propaguliferous

registered in North, Central, and South America species recognized by its ligulate to spathulate

Sharp et al. 1994; Buck, 1998; Allen, 2018). In leaves not constricted at the middle, mucronate

Argentina, it has been recorded in Buenos Aires apex, plane margins, unistratose lamina, and the

Valdés et al., 2021). Its distribution range now presence of vegetative propagules as small brood

extends to the northeastern part of the country, in leaves borne in clusters at the stem apex (Magill,

(

the Chaco province.

1981; Gallego & Cano, 2007).

Specimens examined. ARGENTINA. Prov.

Distribution and habitat. This species was

Chaco: Dpto. San Fernando, Reserva Natural described based on samples collected in North

y Cultural Caraguatá (27º 23´ 16.7´´ S, 58º 58´ America (Crum & Anderson, 1979) and later

4

9.9´´ W), cortícola en tronco caído, 2-IV-2011, recorded in South America and Africa (Magill,

Jimenez et al. 149 (CTES).

1981; Gallego et al., 2006). In Argentina, it has

been registered by Gallego & Cano (2007) in the

2

1. Sematophyllum subsimplex (Hedw.) Mitt., J. southern (Patagonia) and northwestern regions of the

Linn. Soc., Bot. 12:494. 1869.

country (Tucumán). Its distribution range extends

northeastern Argentina, in the Chaco province.

Sematophyllum subsimplex is distinguished

from S. adnatum by the ovate-lanceolate shape of

its leaves and the alar cells inﬂated and colored.

Specimens examined. ARGENTINA. Prov.

Chaco: Dpto. General Güemes, Parque Nacional

El Impenetrable (25° 00´ 47.5´´ S, 60° 57´ 45.8´´

Distribution and habitat. Sematophyllum W), cortícola sobre madera en descomposición,

subsimplex is an Afro-American taxon registered abundante, sombrío y seco, 11-VI-2023, Jimenez et

from Mexico, Central America, the Caribbean, al. 777 (CTES).

Western and Northern South America, Brazil, West

and West-Central TropicalAfrica (Buck, 1998;Allen, 23. Syntrichia chisosa (Magill, Delgad. & L. R.

2018). In Argentina, it has been previously recorded Stark) R. H. Zander, Bull. Buﬀalo Soc. Nat. Sci. 32:

in Corrientes, Misiones and Santa Fe (Matteri, 2003; 269. 1993.

Alvarez & Villalba, 2021; Alvarez et al., 2023). This

species grows on tree trunks, branches, decaying

logs, stumps, and even on bracket fungi.

Syntrichia chisosa includes small, red-brown

plants with twisted leaves, and it is distinguished

from S. ammonsiana mainly by the distally

Specimens examined. ARGENTINA. Prov. bistratose lamina (Gallego & Cano 2007; Jimenez

Chaco: Dpto. General Güemes, Parque Nacional et al., 2020).

11

Bol. Soc. Argent. Bot. 59 (4) 2024

Distribution and habitat. Syntrichia chisosa is al., 1994). It was found growing in intermixed mats

an Afro-American species registered from North with Stereophyllum radiculosum.

to South America, and South Africa (Zander, 1993;

Gallego & Cano, 2007). In Argentina, it has been

Distribution and habitat. This species has a

previously recorded in Salta and Santiago del Estero worldwide cosmopolitan distribution and colonizes a

(Gallego & Cano, 2007; Jimenez et al., 2020).

wide range of niches (Ros et al., 2022). In Argentina,

it has been previously recorded in Salta (Matteri,

Specimens examined.ARGENTINA. Prov. Chaco: 2003), Buenos Aires (Valdés et al., 2021), and

Dpto. General Güemes, Juan José Castelli, a 2 km del Santiago del Estero (Jimenez et al., 2020).

empalme de ruta 5 y 9 (25° 53´ 46.93´´ S, 60° 35´

5

1.60´´ W), cortícola, abundante, con Frullania sp., Specimens examined.ARGENTINA. Prov. Chaco:

húmedo y soleado, 26-II-2011, Jimenez & Jimenez Dpto. General Güemes, Miraﬂores, Ea. Catalina

1b (CTES). Dpto. Presidencia de la Plaza, Parque (25° 26´ 49.08´´ S, 61° 32´ 36.29´´ W), monte no

9

Nacional Chaco (26º 44´ 59.15´´ S, 59º 42´ 59.72´´ aprovechado, en tronco caído con Stereophyllum

W), cortícola sobre Fabaceae, escaso, seco y sombrío, radiculosum, escaso, a media luz, 19-VII-2022,

6-IV-2011, Jimenez & Martín 165c (CTES).

Jimenez et al. 674 (CTES). Dpto. Presidencia de la

Plaza, Parque Nacional Chaco (26º 44´ 59.15´´ S,

2

4. Tortella humilis (Hedw.) Jenn., Man. Mosses W. 59º 42´ 59.72´´ W), en la “ralera”, cortícola sobre

Quebracho, abundante, húmedo y soleado, 22-I-

012, Jimenez & Martín 314 (CTES). Dpto. Primero

Pennsylvania 96. 1913.

2

This species is characterized by its oblong- de Mayo, Reserva Educativa Colonia Benítez (27º

lanceolate leaves, broadly acute and short apiculate 19´ 06.02´´ S, 58º 56´ 58.27´´ W), terrícola al borde

at the apex, margins plane and entire, costa with 2 del sendero, entre Doryopterys sp., escaso y muy

stereid bands in transverse section, hydroid strand húmedo, 14-IV-2012, Jimenez et al. 416a (CTES).

and dorsal epidermis absent, and basal laminal cells Dpto. San Fernando, Reserva Natural y Cultural

diﬀerentiated across leaf in a v-shaped area (Zander, Caraguatá (27º 23´ 16.7´´ S, 58º 58´ 49.9´´ W),

1993; Sharp et al., 1994).

cortícola, escaso, sombrío y seco, 2-IV-2011, Jimenez

et al. 150 (CTES).

Distribution and habitat. This is a widely

distributed species, being recorded in eastern North 26. Weissia controversa Hedw., Sp. Musc. Frond.

America, northern South America, North Africa, and 67. 1801.

Europe (Sharp et al., 1994). In Argentina, T. humilis

has been previously recorded in the central and

This taxon is diﬀerentiated by the lanceolate to

northern regions of the country (Córdoba, Corrientes, oblong-lanceolate shape of the leaves, with a sharply

Formosa, Jujuy, Misiones, Salta, Santa Fe and acute apex ending in a mucro, distinctly incurved

Tucumán) (Matteri, 2003; Alvarez et al., 2023).

margins, and a well-developed costa with two stereid

bands (Sharp et al., 1994; Allen, 2002).

Specimens examined. ARGENTINA. Prov.

Chaco: Dpto. General Güemes, Parque Nacional El

Distribution and habitat. It is a cosmopolitan

Impenetrable (25° 01´ 00.3´´ S, 60° 56´ 40.5´´ W), species that inhabits soil, rocks, and the bases of trees

cortícola en tronco de “itín”, escaso, 11-VI-2023, (Sharp et al., 1994; Allen, 2002). In Argentina, it has

Jimenez et al. 774 (CTES).

been registered from Córdoba and Misiones (Matteri,

003).

2

25. Trichostomum brachydontium Bruch, Flora

1

2: 393. 1829.

Specimens examined. ARGENTINA. Prov.

Chaco: Dpto. Presidencia de la Plaza, Parque

Trichostomum brachydontium is characterized by Nacional Chaco (26º 44´ 59.15´´ S, 59º 42´ 59.72´´

the presence of lanceolate leaves, plane margins, short W), al borde del sendero, entre Thelypteridaceae,

excurrent costa that extend into a mucro, and laminal abundante, sombrío y húmedo, 6-IV-2011, Jimenez

cells with multiﬁd papillae (Zander, 1993; Sharp et & Martín 166a (CTES).

12

S. Jimenez - Novelties on bryophytes from Chaco, Argentina

diScuSSion

ALLEN, B. H. 1994. Moss Flora of Central America. Part

1

. Sphagnaceae-Calymperaceae. Monogr. Syst. Bot.

A total of 26 bryophyte species are added to the

Missouri Bot. Gard. 43:1-513.

2

7 previously recorded in the province, raising the

ALLEN, B. H. 2002. Moss Flora of Central America. Part

2. Encalyptaceae-Orthotrichaceae. Monogr. Syst.

Bot. Missouri Bot. Gard. 90:1-699.

ALLEN, B. H. 2018. Moss ﬂora of Central America. Part

4. Fabroniaceae-Polytrichaceae. Monogr. Syst. Bot.

Missouri Bot. Gard. 132: 1-830.

ALVAREZ, D. J. & A. B. VILLALBA. 2021. Nuevos

registros de ﬂora briofítica para la provincia de Santa

Fé (Argentina) en el valle aluvial del río Paraná

medio. Revista Biol. Neotrop. 18: 60-76.

total number of bryophyte taxa in Chaco province

to 53. The distribution range of six of these species

extends to the northeastern region of the country

(

Braunia cirrhifolia, B. exserta, Physcomitrium

lorentzii, Rhynchostegium serrulatum, Syntrichia

ammonsiana, and Sematophyllum adnatum). These

results improve our understanding of a poorly

explored ﬂora in a region that stands out for its

unique characteristics and underline the value

of ﬂoristic surveys as a fundamental source for

updating knowledge of biodiversity in a region

https://doi.org/10.5216/rbn.v18i2.69684

ALVAREZ, D. J., A. B. VILLALBA & G. M. SUÁREZ.

2023a. Contribución al conocimiento de las brióﬁtas

(Bryophyta) en el valle de inundación del río Paraná

en su tramo medio (Santa Fe, Argentina). Bol. Soc.

Argent. Bot. 58: 195-213.

https://doi.org/10.31055/1851.2372.v58.n2.38909

ALVAREZ, D. J., M. S. JIMENEZ, R. H. ZANDER

& G. M. SUÁREZ. 2023b. Primer registro de

Anaschisma lilliputanum (Pottiaceae, Bryophyta)

para la Argentina. Darwiniana, N.S. 11: 28-37.

https://doi.org/10.14522/darwiniana.2023.111.1089

ANDERSON, L. E. 1954. Hoyer’s solution as a rapid

permanent mounting medium for bryophytes.

Bryologist 57: 242-244.

(Giorgis et al., 2011). It is important to highlight

that four of these species have a bicentric Afro-

American distribution (Fissidens submarginatus,

Sematophyllum subsimplex, Syntrichia ammonsiana

and S. chisosa). The bicentric Afro-American

distribution pattern is exhibited by a long list

of genera and species of mosses and liverworts

(

e.g. Schofield & Crum, 1972; Ochyra, 1992;

Delgadillo, 1993; Suárez & Schiavone, 2008;

Gradstein, 2013; Jimenez et al. 2015). According

to Ochyra (1992), this distribution pattern should

be considerably extended with progress in both the

taxonomy of tropical and south temperate mosses

and ﬂoristic exploration of under-collected areas,

which enhances the value of data obtained from

ﬂoristic works such as the one carried out here.

BIASUSO, A. B. 1993. El género Braunia (Hedwigiaceae,

Musci) en Tucumán. Lilloa 38: 5-21.

BORDIN, J. & O. YANO. 2013. Fissidentaceae

(Bryophyta) do Brasil. Bol. Inst. Bot. 22: 1-72.

BUCK, W. R. 1998. Pleurocarpous mosses of the West

Indies. The New York Botanical Garden, New York.

BURKART, R., N. O. BÁRBARO, R. O. SÁNCHEZ &

D. A. GÓMEZ. 1999. Eco-regiones de la Argentina.

SRNyDS - APN, Buenos Aires.

CABRAL, R. A., M. S. JIMENEZ & G. M. SUÁREZ.

2020. Fissidens submarginatus Bruch. (Argentina).

In: ELLIS, L. (ed.), New national and regional

bryological records. J. Bryol. 63: 4-5.

CABRERA, A. L. 1976. Regiones fitogeográficas

argentinas. En: KUGLER, W. F. (ed.), Enciclopedia

Argentina de Agricultura y Jardinería, pp. 1-85.

ACME, Buenos Aires.

CAIRNS, A., D. MEAGHER, R. SEPPELT & A.

FRANKS. 2020. The moss family Octoblepharaceae

A. Eddy ex Menzel in Australia. Telopea 23: 237-244.

CANO, M. J., J. F. JIMÉNEZ, M. ALONSO & J. A.

JIMÉNEZ. 2016. Untangling Pseudocrossidium

acKnowledgementS

Thanks to the owners of Ea. La Media Legua

and Ea. Catalina for granting permission to sample

the area. The author would like to acknowledge the

support provided by Drs. Martín, Michlig, Niveiro,

and Popoﬀ, and Ing. Mansilla and Krais during the

sampling campaigns. This research was supported

by PICT 2019-00888.

bibliograPhy

ACEBEY, A., S. R. GRADSTEIN & T. KRÖMER.

2

003. Species richness and habitat diversiﬁcation of

bryophytes in submontane rain forest and fallows of

Bolivia. J. Trop. Ecol. 19: 9-18.

13

Bol. Soc. Argent. Bot. 59 (4) 2024

crinitum s.l. (Pottiaceae, Bryophyta) through

molecular and morphometric analysis. Nova

Hedwigia 102: 89-106.

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DELGADILLO, C. 1993. The Neotropical-African moss

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CAÑIZA, B. D., D. F. PERALTA, & G. M. SUÁREZ.

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