Selaginella guatemalensis Baker
Descripción
Stems mostly suberect, stramineous or pale green, to 18 cm tall and 1.5 mm diam., not articulate, not flagelliform, not stoloniferous, 2–4 times branched; rhizophores borne throughout stem length, stout, 0.4–0.5 mm diam.; leaves of two kinds (anisophyllous) throughout stem length; lateral leaves obliquely oblong, 2.5–3 mm long, upper surfaces corrugate, bases rounded acroscopically, truncate basiscopically, margins long-ciliate only at base on large acroscopic lobe, otherwise denticulate, apices obtuse or acute; median leaves ovate, bases scarcely auriculate, midribs prominent, margins short-ciliate, apices acuminate; axillary leaves ovate, long-ciliate in basal 1⁄4, bases rounded; strobili quadrangular, 5–14 mm long; sporophylls monomorphic and of two colors, dorsal rows green, ventral rows pale green; megasporangia basal or subbasal in ventral two rows; microsporangia in dorsal two rows and distal in ventral rows; megaspores white to beige, reticulate to smooth, 350–400 µm diam.; microspores pale orange.A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 22329, MICH, NY, 32161, ENCB, MICH; Carlson 1728, US; Dressler 1634, MICH, NY, US; Hellwig & Whitaker 1360, NY; Rzedowski 33624, ENCB; Zamudio 1536, NY). Oax (Geith 95-MO52, NY; Hallberg 1418, NY, UC; Liebmann s.n. [Pl. Mex. 2060], frag. US!, drawing NY!).A
Elevación
200 – 1600 mA
Ecología y Hábitat
On Atlantic slopes.A
Tipo de vegetación
Selva alta, Bosque de neblina/mesófilo, Bosque de pinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Selaginella guatemalensis is distinguished from S. martensii by having acuminate median leaves, basally ciliate lateral leaves, long-ciliate axillary leaves, and more slender stems, whereas S. martensii has long-aristate median leaves, denticulate lateral and axillary leaves, and thick stems.
Selaginella chiapensis, S. guatemalensis, S. huehuetenangensis, and S. idiospora are closely related and need more detailed study. Selaginella chiapensis has minutely denticulate lateral leaves that curl on the basiscopic margin, are long-ciliate on the proximal 1⁄2 of the acroscopic side and spread at about a 90° angle from the stems. The median leaves are ovate with acuminate tips. The axillary leaves are ciliate 1⁄2–2⁄3 their length.
Selaginella guatemalensis has minutely denticulate lateral leaves that are long-ciliate only on the proximal 1⁄4 of the acroscopic side, 2.5–3 mm long, and spread at about a 45° angle. The median leaves are ovate with acuminate tips. The axillary leaves are ciliate only in the proximal 1⁄4.
The lateral leaves of S. huehuetenangensis are long-ciliate proximally and ciliolate, denticulate, or entire distally. The whitemargined median leaves are long-aristate and ovate-lanceolate to broadly ovate, the axillary leaves are long-ciliate, and the sporophylls each have a distinct keel.
Selaginella idiospora Alston, from Guatemala south to Costa Rica, has non-denticulate lateral leaves that curl on the longciliate acroscopic side and spread at about a 90° angle. The median leaves are suborbicular with short aristae (1⁄4 length of blade), and the axillary leaves are long-ciliate for 3⁄4 the length with the lateral margins often curling.
A
Selaginella chiapensis, S. guatemalensis, S. huehuetenangensis, and S. idiospora are closely related and need more detailed study. Selaginella chiapensis has minutely denticulate lateral leaves that curl on the basiscopic margin, are long-ciliate on the proximal 1⁄2 of the acroscopic side and spread at about a 90° angle from the stems. The median leaves are ovate with acuminate tips. The axillary leaves are ciliate 1⁄2–2⁄3 their length.
Selaginella guatemalensis has minutely denticulate lateral leaves that are long-ciliate only on the proximal 1⁄4 of the acroscopic side, 2.5–3 mm long, and spread at about a 45° angle. The median leaves are ovate with acuminate tips. The axillary leaves are ciliate only in the proximal 1⁄4.
The lateral leaves of S. huehuetenangensis are long-ciliate proximally and ciliolate, denticulate, or entire distally. The whitemargined median leaves are long-aristate and ovate-lanceolate to broadly ovate, the axillary leaves are long-ciliate, and the sporophylls each have a distinct keel.
Selaginella idiospora Alston, from Guatemala south to Costa Rica, has non-denticulate lateral leaves that curl on the longciliate acroscopic side and spread at about a 90° angle. The median leaves are suborbicular with short aristae (1⁄4 length of blade), and the axillary leaves are long-ciliate for 3⁄4 the length with the lateral margins often curling.
A
Bibliografía
C. SEMARNAT 2019: MODIFICACIÓN del Anexo Normativo III, Lista de especies en riesgo de la Norma Oficial Mexicana NOM-059-SEMARNAT-2010: 101 pp. – https://www.dof.gob.mx/nota_detalle.php?codigo=5578808&fecha=14/11/2019#gsc.tab=0 [accessed 2023-05-04 06:16]