Astrolepis laevis (M. Martens & Galeotti) Mickel
Descripción
Rhizomes short, stout, compact; rhizome scales 8–18 mm long, orange-tan to maroon, linear, ciliate-denticulate, sinuous; fronds clumped, 18–80 cm long; stipes 1⁄4–1⁄3 the frond length; blades linear, pinnate-pinnatifid; pinnae 10–32 pairs, short-stalked, lobed ca. halfway to the costae, each with 3–5 pairs of acute lobes; largest pinnae 13–35 X 8–18 mm, basal lobes with basiscopic lobules; adaxial surfaces sparsely clothed with linear, white, ciliolate scales ca. 1 mm long, the body 1–2 cells wide, the long hair-like arms creating a web-like appearance when young; abaxial surfaces densely clothed with white to reddish brown, linear-lanceolate, ciliolate scales overlying a dense tomentum of finely dissected scales, red-brown glandular hairs absent.A
Forma de vida
Rupícola.B
Ejemplar revisado
Ags (Rzedowski 25067, NY). Chih (Hernández M. 8551, MEXU). Chis (Breedlove 21305, NY). Coah (Dorr 2510, MEXU). DF (Schaffner 37, NY). Dgo (Maysilles 8300, MEXU). Gro (Anderson 12873, MICH, NY). Gto (Ventura & López 8372, MEXU). Hgo (Sohmer 9302, NY). Jal (McVaugh 15069, MEXU, NY). Méx (Hinton 15400, NY). Mich (Hinton 12687, NY). NL (Schneider 1079, UC). Oax (Mickel 6344, NY). Pue (Purpus 3144, UC p.p.). Qro (Carranza G. 1817, MEXU). SLP (Pennell 17868, MICH, NY). Tam (Stanford et al. 663, NY). Tlax (Acosta P. 2215, IEB). Ver (Bourgeau 253 bis, NY, P). Zac (Dorado 1595, MEXU p.p.).A
Elevación
900 – 3000 mA
Ecología y Hábitat
Dry, rocky slopes, lava fields, road cuts, limestone outcrops.A
Tipo de vegetación
Bosque de pino-encinoA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
The large (13–35 X 8–18 mm) pinnae with their finely dissected adaxial scales (body only 1–2 cells wide) and the lack of short, glandular hairs abaxially on the blades distinguish this taxon from A. sinuata and A. crassifolia. Astrolepis laevis is distinct from A. crassifolia by the pinnae cut halfway to the costa with 3–5 pairs of lobes (vs. shallowly or not at all cut) and the adaxial laminar scales skeletonized and appearing web-like, the scale body 1–2 cells wide (vs. 2–3 cells wide and not appearing weblike). A