Cheilanthes brachypus Kunze
Descripción
Rhizomes compact, ascending, ca. 3 mm diam.; rhizome scales linear-lanceolate, 6–12 mm long, concolorous orange-tan to slightly bicolorous with a castaneous center and pale margins, lustrous, entire or with occasional teeth; fronds to 30 cm tall, clumped; stipes ca. 1/10 the frond length, only ca. 2–3 cm long, dark brown, terete, with linear scales 2–3 mm long, bases swollen, erose, dull, light brown with whitish margins, mixed with fine hairs 2 mm or more long; blades oblanceolate, longest pinnae 1.2–3.5 cm long just above middle of blade, narrowing proximally, pinnate-pinnatifid; pinnae 9–20 pairs, equilateral; adaxial surfaces dark green with scattered to dense tomentum of curly hairs (1 mm long); abaxial surfaces densely covered with lanceolate scales, these erose at base, overlying a dense rusty tomentum of fine hairs; laminar margins recurved and strongly modified into false indusia 0.5 mm wide; spores tan to black; 2n=60 (Mor).A
Ejemplar revisado
Ags (Siqueiros D. 4285, IEB). Chis (Breedlove 22536, NY). Col (Lott 3038, NY). Gro (Iltis & Solheim 3072, NY). Gto (Galván 2407, IEB). Jal (Pringle 1787, NY). Méx (Tejero-Díez 2410, IZTA). Mich (Hinton 15433, NY). Mor (Ramírez R. 66, XAL). Nay (Feddema 457, NY). Oax (Mickel 6233, NY). SLP (Parry & Palmer 998, NY). Sin (Keil 8767, NY). Son (Fishbein 1897, ARIZ). Ver (Purpus 7870, NY).A
Elevación
50 – 1950 mA
Ecología y Hábitat
Rocky slopes and stream banks.A
Tipo de vegetación
Matorral de otro tipoB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Although this species traditionally was placed in Notholaena, it has well differentiated false indusia. Cheilanthes brachypus superficially resembles Astrolepis sinuata, but differs from that species in the false indusia, sori limited to vein ends, and nonarticulate pinnae with long, unbranched hairs on both surfaces (although mixed with scales on the abaxial surfaces).A