Selaginella PeCtoPuellenSiS (SelaginellaCeae,

lyCoPodioPhyta): a neW SPeCieS from Serra do

Peito-de-moça, bahia, brazil, With CommentS on the

taxonomy of the SPeCieS rePorted in the Country

Selaginella PeCtoPuellenSiS (SelaginellaCeae, lyCoPodioPhyta):

una nueva eSPeCie de la Serra do Peito-de-moça, bahía, braSil Con

ComentarioS Sobre la taxonomía de laS eSPeCieS rePortadaS en el PaíS

1,2,3

4

3

Iván A. Valdespino * , Christian A. López , Jorge I. Ceballos

&

1,3

José M. Palacios

Summary

Background and aims: Our research on neotropical Selaginella led us to examine a

collection from the Atlantic Forest of Serra do Peito-de-Moça, Bahia, Brazil, initially

determined as S. muscosa but with unusual features, indicating it represented an

undescribed species. We also reexamined the taxonomic and nomenclatural status

of three Selaginella taxa previously described from Brazil and gathered information on

introduced and naturalized species in the country.

M&M: Morphological analysis used stereomicroscopes and scanning electron microscopy

to distinguish the suspected new species from its morphologically nearest ally.

Results: We conﬁrmed that the plant material from the Atlantic Forest of Serra do Peito-

de-Moça, Bahia, Brazil, is a new species that we named Selaginella pectopuellensis

1

. Departamento de Botánica,

Facultad de Ciencias Naturales,

Exactas y Tecnología, Universidad

de Panamá, Panamá

2

(

3

. Sistema Nacional de Investigación

SNI), SENACYT, Panamá

. Smithsonian Tropical Research

Institute, Panamá, Panamá

Department of Integrative

4

.

Biology, University of Texas at

Austin, Austin, USA

(Selaginellaceae). Additionally, we clariﬁed the taxonomic and nomenclatural status

of three Selaginella species previously described from Brazil and provided more

information on naturalized taxa. Overall, we expanded the conﬁrmed number of native

Brazilian Selaginella species to 91 and conﬁrmed six introduced and naturalized taxa

in the country.

*

iavaldespino@gmail.com

Citar este artículo

Conclusions: The description of S. pectopuellensis adds to our knowledge of Brazil's

pteridophyte ﬂora. We synonymized S. kriegeriana under S. magnafornensis and

clariﬁed that S. bahiensis subsp. bahiensis and S. bahiensis subsp. manausensis should

not be recognized as separate taxa. We also conﬁrmed six naturalized Selaginella taxa

in Brazil.

VALDESPINO, I. A., C. A. LÓPEZ,

J. I. CEBALLOS & J. M. PALACIOS.

2

024. Selaginella pectopuellensis

Selaginellaceae, Lycopodiophyta):

new species from Serra do

(

a

Peito-de-Moça, Bahia, Brazil, with

comments on the taxonomy of the

species reported in the country. Bol.

Soc. Argent. Bot. 59: 393-403.

Key WordS

Atlantic Forest, endemism, idioblasts, lycophytes, papillae.

reSumen

DOI: https://doi.

org/110.31055/1851.2372.v59.

n3.44549

Introducción y objetivos: Nuestra investigación sobre Selaginella neotropical nos llevó

a examinar una colección del Bosque Atlántico de Serra do Peito-de-Moça, Bahía,

Brasil, inicialmente identiﬁcada como S. muscosa, pero con características inusuales

que indicaban que representaba una especie no descrita. Además, reexaminamos la

taxonomía y nomenclatura de tres taxones de Selaginella previamente descritos en

Brasil e información sobre especies introducidas y naturalizadas en el país.

M&M: Se realizó un análisis morfológico utilizando estereomicroscopios y microscopía

electrónica de barrido para distinguir la supuesta nueva especie de su aliada

morfológicamente más cercana.

Resultados: Conﬁrmamos que el material vegetal del Bosque Atlántico de Serra do

Peito-de-Moça, Bahía, Brasil, es una nueva especie y la nombramos Selaginella

pectopuellensis (Selaginellaceae). Además, clariﬁcamos el estado taxonómico y

nomenclatural de tres especies de Selaginella previamente descritas para Brasil y

adicionamos información sobre taxones naturalizados. En general, ampliamos el

número conﬁrmado de especies nativas de Selaginella en Brasil a 91 y conﬁrmamos la

ocurrencia de seis taxones introducidos y naturalizados en el país.

Conclusiones: La descripción de S. pectopuellensis amplía nuestro conocimiento de la

ﬂora de pteridoﬁtas de Brasil. Sinonimizamos S. kriegeriana bajo S. magnafornensis y

aclaramos que S. bahiensis subsp. bahiensis y S. bahiensis subsp. manausensis no

deben reconocerse como taxones separados. Igualmente, conﬁrmamos seis taxones

de Selaginella naturalizados en Brasil.

Recibido: 15 Abr 2024

Aceptado: 4 Jul 2024

Publicado en línea: 30 Sep 2024

Publicado impreso: 30 Sep 2024

Editora: Olga G. Martínez

PalabraS Clave

Bosque Atlántico, endemismo, idioblastos, licóﬁtas, papilas.

ISSN versión impresa 0373-580X

ISSN versión on-line 1851-2372

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Bol. Soc. Argent. Bot. 59 (3) 2024

introduCtion

our analysis of the protologue, including SEM

images, of S. kriegeriana L.A. Goés, listed in Flora

The Selaginellaceae of Brazil are highly diverse e Funga do Brasil (2020) as a native species, leads

and species-rich (Valdespino, 2015a; Valdespino us to consider it conspeciﬁc with S. magnafornensis

et al., 2018a, b; Flora e Funga do Brasil, 2020). Valdespino & C. López, which has nomenclatural

Alston et al. (1981) listed 45 native Selaginella precedence. In consequence, only 90 Selaginella

species, including two subspecies for Brazil, while species are well-documented as native to Brazil,

Valdespino (2018a, b) estimated 89–96 native while six are introduced and somewhat naturalized

species to occur in that country. Flora e Funga do (i.e., S. kraussiana, S. pallescens, S. plana, S.

Brasil (2020) indicates a total of 97 Selaginella viticulosa, S. vogelii, and S. willdenowii), and

species and one subspecies as occurring within another (i.e., S. kriegeriana) is a recent synonym of

Brazil, as stated in the document’s summary. a previously described taxon. These data serve to

This number, however, is somewhat unclear illustrate that our overall knowledge of Selaginella

since some of the listed taxa are introduced; one diversity in Brazil and, for that matter, in other

is a synonym of a previously described taxon, South American countries such as Colombia,

and the listed subspecies do not have taxonomic Venezuela, Ecuador, Peru, and Bolivia, is still far

standing. Speciﬁcally, S. kraussiana (Kunze) A. from complete (Smith & Kessler, 2018; Valdespino

Braun, S. pallescens (C. Presl) Spring, S. plana etal., 2018a, b). Indeed, asanticipatedbyValdespino

(Desv.) Hieron., S. viticulosa Klotszch, S. vogelii et al. (2018a), new and undescribed species are still

Spring, and S. willdenowii (Desv.) Baker are to be uncovered in these countries. In the case of

non-native, but introduced and naturalized taxa. Brazil, without a doubt, the country is proving to

Likewise, S. viticulosa is known to naturally be a Selaginella treasure trove, and within it, the

occur only in Costa Rica and Panama, while it has Bahia State has yielded recent signiﬁcant ﬁndings

perhaps been introduced to Jamaica and Bermuda (Valdespino 2015a, b; Valdespino et al., 2015).

in the West Indies, and in Colombia, Venezuela,

The state of Bahia includes an extensive territory

as well as in the island of Trinidad in Trinidad with diverse ecosystems, among which the Atlantic

and Tobago (Baksh-Comeau, 2000) in South Forest (Mata Atlântica) along its eastern part is

America. Specimens documenting S. viticulosa a biodiversity hotspot due to the high number of

in Brazil, e.g., material collected in and around endemic and threatened plant species found there

neighborhoods of Rio de Janeiro (i.e., Brade 16105, (Myers et al., 2000; Giulietti et al., 2006; Matos

RB barcode RB00702089-image!; Brade s.n., et al., 2010; Ostroski et al., 2018; Flora e Funga

RB barcode RB00691682-image!), the Botanical do Brasil, 2020). Furthermore, Bahia is the sixth

Garden of Rio de Janeiro (i.e., Nascimento 7, RB state with the highest number of lycophytes and

barcode RB01417493; Oliveira 02, RB barcode ferns in Brazil. It harbors 18 known Selaginella

RB00316275;Simões76,RBbarcodeRB00316244, species, which makes it the seventh in that country

8

7, RB barcode RB00316245; Winter 68, RB in terms of the number of taxa in that genus (Flora

barcode RB00533100-image!, 69, RB barcode e Funga do Brasil, 2020), including four endemic

RB00316191, 73, RB barcode RB00316187, 102, Selaginella: S. bahiensis Spring (Spring, 1840), and

RB barcode RB00316116 – all RB images!), and the recently described S. blepharodella Valdespino,

the Parque Nacional da Tijuca (i.e., Mynseen 1365, S. crinita Valdespino, and S. mucugensis Valdespino

RB barcode RB00726501-image!), originate from (Valdespino et al., 2015). In this study, we further

well-known areas with introduced, cultivated or describe Selaginella pectopuellensis Valdespino &

naturalized ﬂora. Additionally, S. bahiensis Spring C. López as an additional new and endemic species

subsp. manausensis (Bautista) Jermy & J.M. Rankin from the Bahia State, Brazil.

(≡ S. manausensis Bautista) is conspeciﬁc with and

a later heterotypic synonym of S. palmiformis

Alston ex Crabbe & Jermy, therefore S. bahiensis materialS and methodS

subsp. bahiensis is a homotypic synonym of S.

bahiensis (Valdespino et al., 2015) and should not

One gathering of Selaginella pectopuellensis was

be listed as an independent taxon. Furthermore, initially examined at the Herbarium of the New York

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I. A. Valdespino et al. - Selaginella pectopuellensis from Bahia, Brazil

Botanical Garden (NY) using a stereomicroscope

Description. Plants terrestrial. Stems long-

(

i.e., Olympus SZ 60-STS). Further examination creeping, stramineous, 8–12 cm long, 0.8–1.0

of loaned material was undertaken at the University mm diam., non-articulate, not flagelliform,

of Panama herbarium (PMA) using an Olympus non-stoloniferous, sparsely 2- or 3-branched.

SZX16 to better ascertain leaf and spore characters. Rhizophores ventral, stout, borne throughout

Air-dried samples of stem sections, leaves, and proximal ⅓−½ of stems, 0.2–0.5 mm diam.

spores were sputter coated with gold-palladium and Leaves heteromorphic throughout, coriaceous,

examined with a Zeiss Model Evo 40vp Scanning upper surfaces green or greenish-brown when

Electron Microscope (SEM) at 10–15 kV at the old or due to ﬁxing and drying processes, lower

Smithsonian Tropical Research Institute (STRI). surfaces silvery green or light-brown when old or

Digitized SEM images of plant sections, leaves, due to sample processing. Lateral leaves distant,

and spores were taken at diﬀerent magniﬁcations, ascending to slightly perpendicular to stems or

post-processed, and assembled in multipart ﬁgures slightly imbricate along distal portion of stem and

using Adobe Photoshop, as explained in Valdespino branches, ovate, ovate-cordate to cordate, 1.8–2.5 ×

(

2016). Terminology and measurements used in 1.0–1.5 mm; bases subcordate, glabrous, acroscopic

species descriptions follow Valdespino (2019) and bases overlapping stems, basiscopic bases free

Valdespino & López (2019), while conservation from stems; acroscopic margins on both surfaces

status was determined according to the IUCN continuously bordered by a hyaline band comprised

Standards and Petitions Committee (2022).

of idioblasts, the band 3–7 cell wide, each idioblast

elongate, straight-walled, and papillate, the papillae

in one or two rows over each cell lumen and

submarginally on upper surfaces bordered by a

broad band of 5–10 round, sinuate-walled, and

reSultS

Selaginella pectopuellensis Valdespino & C. papillate cells along distal ½, the papillae 5–22

López, sp. nov. TYPE: BRAZIL. Bahia, Arataca, on each cell lumen, basiscopic margins on upper

Serra do Peito-de-Moça, road joining Arataca to surfaces continuously bordered by a hyaline band

Una, ca. 22.4 km from Arataca, entrance to Sto. comprised of idioblasts, the band 1–3 cell wide, each

Antônio settlement, RPPN Caminho das Pedras, idioblasts similar to those on acroscopic margins on

1

5°10’25”S, 39°20’30”W, 1000 m, 13-IV-2007, F. upper surfaces and submarginally, continuously

B. Matos, S. Vieira, M. Lopes, S. Sant’Ana & L. C. bordered by a band of cells similar to that found

Gomes 1360 (Holotype, NY barcode NY1686456!; submarginally, along distal ½ of acroscopic margins

isotypes, CEPEC-n.v., PMA!, UPCB barcode on upper surfaces, the basiscopic margins on lower

UPCB0010917-image!). Figs. 1-5.

surfaces, bordered by a band of papillate idioblasts,

the band 2–6 cell wide, each idioblast as those in

Diagnosis. Selaginella pectopuellensis diﬀers acroscopic margins and both the acroscopic and the

from S. muscosa Spring by its coriaceous (vs. basiscopic submarginal portion of laminae in lower

chartaceous) leaves that lack elongate idioblasts surfaces without a band of rounded, sinuate-walled,

on upper and lower surfaces or few scattered along and papillate cells, acroscopic margins long-ciliate

acroscopic halves of lateral leaves (vs. idioblasts along proximal ⅔, otherwise short-ciliate to dentate

present on both leaf surfaces or only visible distally, each cilium, stiﬀ and 0.05–0.15 mm long,

on leaf lower surfaces), broadly-ovate to ovate- basiscopic margins sparsely short-ciliate to dentate

orbicular (vs. ovate-lanceolate) median leaves throughout; apices short-acuminate, each acumen

long-ciliate throughout (vs. short-ciliate along 0.05–0.2 mm long, each tipped by 1–3, short, tooth-

proximal ¾, otherwise serrate to serrulate along like hairs; upper surfaces glabrous, comprising

distal ¼) margins, each cilium 0.15 or 0.2 (0.1 or rounded, irregularly, sinuate-walled, laevigate

less) mm long, and long-aristate apices with each cells, without idioblasts or stomata; lower surfaces

arista covered by stiﬀ, short, permanent tooth-like comprising elongate, sinuate-walled cells, with few

hair (vs. arista lacking stiﬀ tooth-like hairs or this elongate and papillate idioblasts sparsely distributed

inconspicuous, delicate, and easily abraded) on along acroscopic halves of the laminae and

upper surfaces.

abundantly distributed on proximal portion near the

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Bol. Soc. Argent. Bot. 59 (3) 2024

Fig. 1. Selaginella pectopuellensis Valdespino & C. López. Scanned image of holotype: Matos et al. 1360

(NY). Digitized image courtesy of the herbarium of the University of Panama, Panama.

396

I. A. Valdespino et al. - Selaginella pectopuellensis from Bahia, Brazil

Fig. 2. Selaginella pectopuellensis Valdespino & C. López. A: Stem, upper surface. B: Lateral leaf, upper

surface. C: Close-up of lateral leaf proximal section, upper surface. D: Close-up of lateral leaf distal section,

upper surface. E: Median leaf, upper surface. F: Close-up of median leaf proximal section, inner half, upper

surface. G: Close-up of median leaf proximal section, outer half, upper surface. H: Close-up of median leaf,

distal section, upper surface. Abbreviations= a: round, papillate cells; b: stomata; c: elongate and papillate

idioblasts. Scale bars= A: 1 mm; B–H: 100 µm. (Matos et al. 1360, holotype, NY).

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Bol. Soc. Argent. Bot. 59 (3) 2024

Fig. 3. Selaginella pectopuellensis Valdespino & C. López. A: Stem, lower surface. B: Lateral leaf, lower

surface. C: Close-up of lateral leaf proximal section, lower surface. D: Close-up of lateral leaf distal section,

lower surface. Abbreviations= a: stomata; b: elongate and papillate idioblasts on leaf lamina; c: submarginal

and marginal, elongate and papillate idioblasts. Scale bars= A: 1 mm; B–D: 100 µm. (Matos et al. 1360,

holotype, NY).

bases, each idioblast lumen covered by 1 or 2 rows arista denticulate along its margins, ½ the length

of papillae, with stomata in 2–5 rows along midribs of the laminae, each 0.5–0.8 mm long, usually

and on one row along basiscopic margins. Median tipped by 1–3 teeth; upper surfaces composed of

leaves slightly imbricate, ascending, broadly ovate medial to submedial laevigate, rounded, sinuate-

to broadly ovate-elliptic or orbicular with the inner walled cells and a submedial to submarginal band

and outer halves equal in width, 1.0–1.6 × 0.7–1.1 of rounded, sinuate-walled, and papillate cells

mm; bases glabrous, rounded to oblique on leaf similar to those present in submarginal portion of

near distal portions of main stems and branches, the lateral leaf laminae upper surfaces, without

without auricles; margins continuously bordered idioblasts, with stomata in 1–3 rows along distal

by a broadly hyaline band comprised of idioblasts, ¾ of midribs and one row submarginally on

the band 2–4 cells wide, the idioblasts, elongate, proximal ¼ of inner margins and 6 or 7 marginally

straight-walled, and papillate, the papillae on one or and submarginally on proximal ¼–⅓ of outer

two rows on each cell lumen, long-ciliate throughout margins; lower surfaces similar to lower surfaces

or entire along proximal ¼–⅓ and long-ciliate of lateral leaves, without idioblasts or stomata.

along distal ¾–⅔; apices keeled, long-aristate, the Axillary leaf shape, size, bases, margins (except

398

I. A. Valdespino et al. - Selaginella pectopuellensis from Bahia, Brazil

Fig. 4. Selaginella pectopuellensis Valdespino & C. López. A: Megaspore, proximal face. B: Close-up of

megaspore, proximal face. C: Close-up of megaspore, proximal face. D: Microspore, proximal face. E:

Megaspore, distal face. F: Close-up of megaspore, distal face. G: Close-up of megaspore, distal face. H:

Microspore, distal face. Scale bars= A, E: 100 µm; B, D: 10 µm; C, F–H: 2 µm. (Matos et al. 1360, holotype, NY).

399

Bol. Soc. Argent. Bot. 59 (3) 2024

those on proximal faces, closed, the microstructure

echinate and perforate; microsporangia on two

dorsal rows; microspores orange, 25–40 µm

diam., proximal faces rugulate, the microstructure

echinulate, distal faces rugulate with baculate to

capitate projections, the microstructure echinulate.

Distribution and habitat. Selaginella

pectopuellensis grows as a terrestrial plant among

shrubby and herbaceous vegetation in montane

forests with many epiphytes at 1000 m in Serra do

Peito-de-Moça in southeastern Bahia, Brazil.

Etymology. The specific epithet is a free,

compound word derived from the Latin, pectus

“breast” and puella “maiden,” which together refer

to the Portuguese name of the mountain range “Serra

do Peito-de-Moça,” where this novel species occurs.

Fig.5.DistributionmapofSelaginellapectopuellensis

Valdespino & C. López.

Conservation status. Selaginella pectopuellensis

is only known from a single collection made in

some with both margins as acroscopic margins of the Private Natural Heritage Reserve (i.e., RPPN

lateral leaves), apices, and leaf surfaces similar to Caminho das Pedras, Bahia). The Reserve is

lateral leaves. Strobili terminal, single at stem and adjacent to and forms part of the inclusive Parque

branch tips, quadrangular to slightly dorsiventrally Nacional da Serra das Lontras in the Atlantic

flattened, 3–10 mm long. Sporophylls slightly Forest (Mata Atlântica) of Brazil, which comprises

heteromorphic and spreading, ovate to ovate- signiﬁcant remnants of mountain forest in the South

lanceolate, dorsal sporophylls slightly shorter than of Bahia harboring a rich plant diversity that is

ventral sporophylls, each with a strongly developed highly endangered (Amorim & Matos, 2009). Based

keel along the midrib, the keel puberulent with short on IUCN criteria (IUCN Standards and Petitions

teeth or hairs along distal ½, margins hyaline as in Committee, 2022), the extent of occurrence (EOO=

2

)

median leaves, short-ciliate to dentate throughout, 0.000 km and the area of occupancy (AOO= 4.000

2

apices long-aristate, aristae 0.3–0.5 mm long, km ) suggest this species is critically endangered

each tipped by 1–4, short tooth-like projections; (CR). According to Araujo et al. (2009) this region

dorsal sporophylls 1.0–1.2 × 0.6–0.8 mm, upper severely suﬀers from deforestation and habitat

surfaces green with cells as in median leaves upper fragmentation. This is conﬁrmed by more recent

surfaces, except for the halves that overlap each vegetation loss analysis (Guedes et al., 2021) and

ventral sporophyll where the surfaces are hyaline, vegetation images (Google, 2024).

composed of elongate and sinuate-walled cells,

similar to those of median leaves lower surfaces,

lower surfaces hyaline, similar to those of the diSCuSSion

median leaves; ventral sporophylls 1.3–1.5 × 0.6–

0

.8 mm, upper and lower surfaces greenish-hyaline

Selaginella pectopuellensis is notable by its long-

to hyaline, comprised of elongate, sinuate-walled creeping stems, which are sparsely 2- or 3-branched,

cells. Megasporangia along two ventral rows; ventral, stout rhizophores, each borne throughout

megaspores yellow, 330–410 µm diam., proximal proximal ⅓−½ of stems, coriaceous leaves (Fig. 1),

faces reticulate, each reticulum small in diameter imbricate and ascending median leaves, each broadly

and closed, with a slightly developed equatorial ovate to broadly ovate-elliptic or orbicular with the

ﬂange, the microstructure echinate and perforate, inner and outer halves equal in width and margins

distal faces reticulate, each reticulum wider than continuously bordered by a broadly hyaline band of

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I. A. Valdespino et al. - Selaginella pectopuellensis from Bahia, Brazil

idioblasts, the band 2–4 cells wide, the idioblasts, the vulnerability of these species and the need

elongate, straight-walled, and papillate, the papillae for conservation eﬀorts. The documentation of

on one row on each cell lumen (Figs. 2A, E). In a new species like Selaginella pectopuellensis

addition, the median leaf of S. pectopuellensis is is significant for understanding the ecological

long-ciliate throughout margins or entire along complexity of these regions and the evolutionary

proximal ¼–⅓ and long-ciliate along distal ¾–⅔ of relationships within the genus Selaginella. In this

margins and has keeled, long-aristate apices, with work, we recognize 91 native Selaginella species

aristae denticulate along margins, each arista ½ the and 6 introduced and naturalized taxa in Brazil,

length of the laminae, 0.5–0.8 mm long, and usually while proposing S. kriegeriana as a conspeciﬁc with

tipped by one to three teeth (Figs. 2E−H). Selaginella and a synonym of S. magnafornensis.

pectopuellensis is unique by its lateral leaf upper

surfaces having a distinct submedial to submarginal

band of round, sinuate-walled, and papillate cells author ContributionS

along distal ½ on acroscopic halves of the laminae,

which is also present along the laminae length on

basiscopic halves of the laminae (Figs. 2B−D).

IAV: conceptualization (lead); data curation

(lead); formal analysis (lead); funding acquisition

The type collection of S. pectopuellensis was (lead); investigation (lead); methodology (lead);

initially determinedasS. muscosa, whichshowssome project administration (lead); resources (lead);

degree of variability throughout its distribution range supervision (lead); validation (lead); visualization

(

Valdespino, 1995). Certainly, S. pectopuellensis (lead); writing – original draft (lead); writing –

and the latter species show certain morphological review and editing (lead). CAL: data curation

similarities, including broadly-ovate, long-aristate (equal); formal analysis (equal); investigation

median leaves with hyaline margins. In addition, (supporting); methodology (supporting); writing

both species have yellow megaspores on two ventral – review and editing (equal). JIC: data curation

rows of sporophylls and orange microspores on two (supporting); formal analysis (supporting);

dorsal rows of sporophylls, although S. muscosa methodology (supporting); resources (supporting);

might also have white megaspores. Nevertheless, visualization (supporting); writing – review

S. pectopuellensis is easily distinguished from and editing (supporting). JMP: data curation

S. muscosa by the characters contrasted in the (supporting); formal analysis (supporting);

diagnosis. Selaginella pectopuellensis is also easily investigation (supporting); resources (supporting);

separated from the latter by its lateral leaf upper software (supporting); visualization (equal); writing

surfaces having (vs. lacking) a distinct submedial – review and editing (supporting).

to submarginal band of round, sinuate-walled, and

papillate cells along distal ½ on acroscopic halves

of the laminae, which is also present along the aCKnoWledgmentS

laminae length on basiscopic halves of the laminae.

It is further distinct from S. muscosa by its lateral

We are thankful to Dr. Robbin Moran, Curator

leaf acroscopic margins long-ciliate throughout (vs. Emeritus of ferns and lycophytes at the New York

serrate or shortly ciliate along basal ¼ and serrulate Botanical Garden Herbarium (NY), for allowing

distally), each cilium stiﬀ and 0.1 or 0.2 mm (vs. the study of the holotype, arranging its loan, and

each cilium, when present, 0.5 mm) in length, use of fragment material for further study at the

with long-acuminate (vs. acute to short-acuminate) herbarium of the University of Panama (PMA).

apices, each 0.1 (vs. less than 0.1) mm long.

We are grateful to Dra. María de Stapf and Vielka

Murillo, both at PMA, for respectively, procuring

specimen loans and digitizing the holotype. The

Smithsonian Tropical Research Institute (STRI)

has also supported this research by allowing the

ConCluSionS

This study emphasizes the rich biodiversity use of scanning electron microscopy facilities.

found in Brazil’s Atlantic Forest and the importance IAV is further indebted to the Dean of the Faculty

of continued research in this area. It also highlights of Natural and Exact Sciences and Technology

401

Bol. Soc. Argent. Bot. 59 (3) 2024

and the oﬃce of the Vice Chancellor for Research GUEDES, P., L. F. M. HIROTA & M. ROSA. 2021. Atlas

and Graduate Programs of the University of

Panama, and the National Research System

da Mata Atlântica e MapBiomas se complementam

no monitoramento do bioma. Fundação SOS Mata

Atlântica-Instituto Nacional de Pesquisas Espaciais

and MapBiomas. Available in: https://www.sosma.

org.br/artigos/atlas-da-mata-atlantica-e-mapbiomas-

se-complementam-no-monitoramento-do-bioma/.

[Accessed August 17, 2021].

(

SNI, for its initials in Spanish) of the National

Secretariat for Science, Technology, and Innovation

SENACYT) of Panama for supporting his research

(

on Selaginella. CAL thanks Dr. Brian E. Sedio for

his constant support and advice. We also appreciate

the support provided by Pedro Argudo at NovoArt IUCN STANDARDS AND PETITIONS COMMITTEE.

in preparing composed images and Christopher

Gioia and Dr. Robbin Moran for proofreading an

early draft of the manuscript. Finally, we are also

thankful to the reviewers and the editorial team of

the Boletín de la Sociedad Argentina de Botánica

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The ferns and lycophytes of a montane tropical

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