Asplenium yelagagense Mickel & Beitel
Descripción
Roots fibrous, not proliferous; rhizomes suberect; rhizome scales black, clathrate, 3–4 X 0.5–0.8 mm, entire; fronds clumped, 20–35 cm long; stipes castaneous to atropurpureous, lustrous, 6–13 cm X 1–1.5 mm, 1⁄3–2⁄5 of frond length, glabrous, not winged; blades thick-herbaceous, 15–25 X 6–10 cm, lanceolate, 1-pinnate, not reduced proximally, apices flagelliform, proliferous; rachises castaneous, lustrous, glabrous, adaxially with tan wings ca. 0.1 mm wide; pinnae lanceolate, 10–15 pairs, 3.5–6 X 0.8–1 cm (excluding basal auricle), auriculate acroscopically, narrowly cuneate and excised basiscopically, apices acute, margins coarsely serrate with sinuses 0.5–1 mm deep; veins mostly simple, except for acroscopic basal vein, obscure, tips evident adaxially; indument abaxially of scattered, tan, appressed, clavate hairs 0.1–0.2 mm long; sori 7–11 pairs per pinna, on both sides of midveins, each pinna with 1 or 2 diplazioid sori on basal acroscopic vein; indusia 6–9 X 0.3–0.4 mm, becoming strongly reflexed, margins ciliolate with hairs 0.1 mm long; spores reniform.A
Forma de vida
TerrestreA
Ejemplar revisado
Known only from the type collection. OAX (Mickel 1058, NY, UC).A
Distribución
México (Country) endemicB
Elevación
1050–1200 mA
Ecología y Hábitat
On the Atlantic slope.A
Tipo de vegetación
Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
This species is closely related to A. cirrhatum and similar to it in having proliferous, flagelliform tips and 1-pinnate blades. Asplenium yelagagense is distinct in its larger, dark green, strongly auriculate pinnae 3.5–6 cm long, with margins coarsely serrate (sinuses 0.5–1 mm deep), and also by the longer (6–9 mm long) and more numerous sori (7–11 pairs), some diplazioid on the auricles. More study is needed to establish the relationship between these two species and other 1-pinnate taxa of this complex, including A. acutiserratum (Hieron.) Mickel of Trinidad, A. macrurum Mickel & Stolze of Ecuador, and especially A. karstenianum Klotzsch and A. galipense Hieron. of Venezuela.
A
A