Selaginella hoffmannii Hieron.
Descripción
Stems erect, mostly 10–50 cm tall, 0.8–2 mm diam., much branched, frond-like, not articulate, usually not flagelliform (except some specimens from Chiapas), stolons red, extremely slender (2–3 mm diam.), main stems simple, red to pink, especially at base, 2–3 times branched; rhizophores only at stem bases or in proximal 5 cm of main stems, 0.2–0.3 mm diam.; leaves of two kinds (anisophyllous) throughout stem length; lateral leaves 1–2 mm long, to 3 mm on main stems, obliquely narrowly oblong, bases rounded to subcordate, margins denticulate and narrowly white-bordered (ciliate-denticulate on main stems), apices acute, often with idioblasts; median leaves ovate, slightly curved inward, bases exauriculate or with two very short, subequal auricles, margins denticulate, with narrow white borders, apices long-aristate; axillary leaves narrowly lanceolate, with rounded, exauriculate bases, margins denticulate and whitish; strobili quadrangular, 3–5 mm long; sporophylls monomorphic and of two colors, dorsal rows green, ventral rows nearly colorless; megasporangia in ventral two rows; microsporangia in dorsal two rows; megaspores white, finely rugose-reticulate, ca. 250 µm diam.; microspores orange, with slender projections.A
Forma de vida
Rupícola, TerrestreA
Ejemplar revisado
Chis (Purpus 7222, UC). Col (Orcutt 4640, DS, MEXU, NY p.p., US). Gro (Mexia 8860, ARIZ, UC, US). Jal (McVaugh 15943, US). Méx (Matuda 27194, UC, US). Mich (Hinton 15223, LL, UC, US). Nay (Breedlove 44315, CAS). Oax (Hallberg 1275, US; Mickel 5201, UC, US). Sin (Sanders 21036, UC). Ver (Sharp 45797, US).
Unverified, Doubtful, or Mistaken Reports. Qro (Rzedowski 45244a, QMEX, and Gutiérrez 70, ENCB, cited by Arreguín et al., 2001, but not verified).
A
Unverified, Doubtful, or Mistaken Reports. Qro (Rzedowski 45244a, QMEX, and Gutiérrez 70, ENCB, cited by Arreguín et al., 2001, but not verified).
A
Elevación
0 – 1950 mA
Ecología y Hábitat
On rocks along streams in lowland woods.A
Tipo de vegetación
Selva alta, Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
The erect stems with reddish bases and red stolons, and denticulate lateral, median, and sporophyllous leaves distinguish this taxon. As pointed out by Smith (1981), several specimens of S. hoffmannii in Chiapas have flagelliform lateral branches, similar to those of S. flagellata and S. tenella.A