Gleichenella pectinata (Willd.) Ching
Descripción
Rhizomes 3–6 mm diam., with deciduous reddish brown septate hairs 2–3 mm long, surface scabrous when hairs shed; stipes stramineous to light brown, glabrous, dull; frond apices dormant (rarely continuing), pinnae forking unequally, appearing as if each pinna has one flexuous main axis with alternating, unequally branched side branches; forks containing a tuft of reddish brown or castaneous hairs, these hairs simple or usually stellate or branched at the very base, also some forks (within fork) with a pair of small, entire to pinnatifid “stipules,” lacking accessory pinnae proximal to the fork; penultimate segments narrowly elliptic; ultimate segments linear, chartaceous to coriaceous, often emarginate at the tip, usually glabrous or glabrescent, often glaucous abaxially, margins revolute at least on fertile segments; sori inframedial between segment margins and midveins; 2n=86 (Chis, Jam, Trin).A
Forma de vida
TerrestreA
Ejemplar revisado
Chis (Breedlove 42093, DS, MEXU; Calzada et al. 9159, UC, XAL). Gro (Lorea 2849, FCME, IEB, MEXU). Hgo (Moore 3022, UC). Jal (Castillo et al. 10349, MEXU). Mex (Hinton 7543, CAS, MEXU, NY, US). Oax (Mexia 9243, CAS, GH, MICH, NY, UC, US; Mickel 6137, ENCB, MEXU, NY, UC). Pue (Márquez R. et al. 708, ENCB, MEXU, XAL). Tab (González S. 3, UAMIZ). Ver (Copeland herb. 7, DS, MEXU, UC; Orcutt 3202, DS, MEXU, NY).A
Elevación
100 – 2150 mA
Ecología y Hábitat
Upright or trailing, forming dense patches on open, dry to moist slopes.A
Tipo de vegetación
Selva alta, Bosque de neblina/mesófilo, Bosque de pino-encinoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Gleichenella pectinata differs from Dicranopteris flexuosa by lacking accessory pinnae proximal to the forks (not to be confused with the pair of “stipules” subtending bud, but within the branching of the axes), pinnae forking unequally to produce alternate pairs of pinnules, axes other than stipes with narrow lateral ridges (especially pronounced on axes below ultimate branching), and bilateral spores.A