Asplenium palmeri Maxon
Descripción
Roots thin, fibrous, not proliferous; rhizomes erect; rhizome scales bicolorous, center black, occluded, margins narrow, brown, clathrate, 2–5 X 0.2–0.5 mm, entire; fronds clumped, 5–30 cm long; stipes black to castaneous, lustrous, 0.5–2 cm X 0.2–0.7 mm, 1⁄10 or less of frond length, glabrous, adaxially with whitish to tan wings 0.1 mm wide; blades chartaceous to subcoriaceous, 5–15(–20) cm long, 1-pinnate, linear-lanceolate, reduced proximally nearly to the rhizomes, apices pinnatifid or with rachises often flagelliform and producing a bud (ultimately plantlet) at the tips; rachises atropurpureous, lustrous, with scattered hairlike clathrate scales 1–1.5 mm long, adaxially with tan wings 0.1–0.2 mm wide; pinnae oblong, (15–)20–40 pairs, not deflexed, 3–8 X 1.5–3 mm, articulate, rachis color not extending onto pinna stalks, scarcely occasionally with a tiny auricle acroscopically, apices obtuse, crenate-serrate to serrate with sinuses 0.3–0.5 mm deep; veins simple, tips not evident adaxially; indument abaxially of scattered, appressed, whitish to tan clavate hairs 0.1 mm long; sori 2–7 pairs per pinna, on both sides of midveins; indusia 0.8–1 X 0.3–0.5 mm, margins entire; spores globose to ovoid.A
Forma de vida
EpipetricA
Ejemplar revisado
Ags (McVaugh & Koelz 127, IEB, MEXU, NY). Chih (Correll & Gentry 22800, MO, NY, UC, US). Coah (Johnston 8272, MEXU, MO). DF (Lyonnet 1385 p.p., MEXU, US). Dgo (Palmer 555, MEXU, MO, NY, UC, US). Gro (Carbajal A. 7, FCME). Gto (Rzedowski 40578, ENCB, IEB). Hgo (Chase 7436, MO, US). Jal (Pringle 1838, DS, MO, UC). Méx (Magallón B. 91, ENCB). Mich (Rzedowski 39267, IEB). Nay (Breedlove 45373, CAS). NL (Correll & Johnston 19923, NY). Oax (Mickel 4945, ENCB, NY, UC, US). Pue (Purpus 3152, UC). Qro (Carranza 3653, IEB, UC). Sin (Breedlove 17907, CAS). Son (Sanders 13047, NY). Tam (Stanford et al. 2620, NY). Ver (Purpus 6619, MO, UC, US). Zac (McVaugh 17761, MICH).A
Elevación
800–2000(–2750) mA
Ecología y Hábitat
On steep hills.A
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Asplenium palmeri is distinguishable from related dark-stiped aspleniums (except A. heterochroum, A. nesioticum, and A. resiliens) by the lack of conspicuous vein tips adaxially. It differs from all three in many features, the most conspicuous being the proliferous tips present on many blades and its different habit. From A. resiliens, A. palmeri differs by having smaller, thinner-textured pinnae with distinctly serrulate margins and delicate, arching blades with opposite spreading pinnae. From the more northerly A. trichomanes, A. palmeri differs in having generally larger arching fronds, serrulate pinna margins, and flagelliform blade tips.
Fisher 35382 (NY, US), cited as this species by Palacios-Rios (1992), appears to be A. resiliens.
A
Fisher 35382 (NY, US), cited as this species by Palacios-Rios (1992), appears to be A. resiliens.
A