Cheilanthes microphylla Sw.
Descripción
Rhizomes short- to long-creeping, horizontal, 1–2 mm diam.; rhizome scales linear, concolorous orange-brown to weakly bicolorous with age; fronds to 30 cm long, approximate to 5 mm distant; stipes ca. 1⁄3 the frond length, castaneous to black, lustrous, terete, glabrate with scattered, fine, 1–3 mm golden hairs; distal stipes and rachises puberulent adaxially with 0.2–0.5 mm long hairs, hirsute abaxially with appressed, 1–3 mm long hairs; blades lanceolate, 2–3-pinnate, chartaceous; adaxial surfaces glabrous or with scattered 0.1 mm white hairs; abaxial surfaces with scattered to dense 0.1–0.2 mm white hairs along veins or rarely glabrous; laminar margins curved, modified into 0.3 mm wide false indusia, margins entire or with very short hairs; spores tan; n=2n=87 (SLP), 2n=116 (Jam, USA).A
Forma de vida
Rupícola.B
Ejemplar revisado
Chih (Pringle 449, NY). Chis (Breedlove 2228, NY). Coah (Palmer 1419, NY). DF (Schaffner 99, NY). Dgo (Torres C. 3556, MEXU). Gro (Vasquez 85, NY). Hgo (Edwards 880, DS). Jal (McVaugh 24442, NY). Méx (Rzedowski 37830, NY). Mich (Rzedowski 41767, IEB). Mor (Lyonnet 80, MEXU). NL (Correll & Johnston 19782, NY). Oax (Hernández G. 924, NY). QR (Rzedowski 42943, MEXU). Qro (Servin 952, IEB, NY). SLP (Fisher 37116, US). Son (Hartman 262, NY). Tam (Hellwig 1207, NY). Ver (Purpus 2173, NY). Zac (Palmer 256, NY).
Unverified, Doubtful, or Mistaken Reports. Gto (Rzedowski 39261, IEB, cited by Díaz-Barriga & Palacios-Rios, 1992, but not verified).
A
Unverified, Doubtful, or Mistaken Reports. Gto (Rzedowski 39261, IEB, cited by Díaz-Barriga & Palacios-Rios, 1992, but not verified).
A
Elevación
100 – 2350 mA
Ecología y Hábitat
Limestone outcrops.A
Tipo de vegetación
Selva baja, Bosque de encinoB
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Cheilanthes microphylla is most often confused with C. alabamensis, which can be distinguished by being more coriaceous, more nearly bipinnate, and the segments acute to acuminate. Cheilanthes aemula is in the same complex but has broadly deltate blades. Cheilanthes fimbriata has been included within C. microphylla but is distinct in its fimbriate indusial margins and distribution on the Atlantic slope.
Cheilanthes notholaenoides and C. cucullans are closely allied, but are distinct from C. microphylla in having long, evenly distributed rachis hairs rather than dense short hairs concentrated adaxially.
A
Cheilanthes notholaenoides and C. cucullans are closely allied, but are distinct from C. microphylla in having long, evenly distributed rachis hairs rather than dense short hairs concentrated adaxially.
A