Cheilanthes clevelandii D.C.Eaton

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Cheilanthes clevelandii D.C.Eaton

Descripción

Rhizomes short-creeping, horizontal, 1–3 mm diam.; rhizome scales linear-lanceolate, lustrous dark brown concolorous or with paler margin, entire; fronds to 40 cm long, approximate to distant; stipes ca. 1⁄2 the frond length, dark brown, lustrous, terete, clothed with 1–2 mm long hairs and filiform scales to glabrescent with age; blades oblong-lanceolate to ovate, quadripinnate, 2–8 cm wide; rachises terete, with scattered scales and sparse hairs; pinnae 10–12 pairs (more in California), equilateral; segments bead-like, most about 1 mm long; adaxial surface glabrous; abaxial surfaces with costal scales ovate-lanceolate to broadly deltate, deeply cordate at base, with overlapping basal lobes, conspicuous, ca. 1 X 0.5–1 mm, imbricate, concealing ultimate segments but not exceeding their margins, ciliate (usually only on proximal 1⁄2), often irregularly coarsely toothed and somewhat flexuous, on the segments reduced ciliate scales, some appearing as branched hairs, apices attenuate; lamina margins recurved, weakly differentiated, entire; sporangia 64-spored; spores brown.A

Forma de crecimiento

Hierba

Forma de vida

Terrestre

Nutrición

Autotrófica

Ejemplar revisado

BCN (Brandegee s.n., 30 Apr 1889, UC p.p.; Fischer et al. 2073, ENCB; Hevly 2073, ARIZ; Moran 16168, MEXU, 24597, SD; Orcutt s.n., 13 Apr 1882, NY; Porter 160, CAS, MEXU; Pringle s.n., April 1882, LL, US; Wiggins & Gillespie 4048, CAS, DS, MEXU, NY, US; Yatskievych 82-171, ARIZ).A

Distribución

México (país) Nativo y no endémicoA, Norteamérica al N de México PresenteA

Elevación

0 – 1600 mA

Ecología y Hábitat

Rocky slopes and ledges, usually on igneous substrates.A

Tipo de vegetación

No especificado

Categoría IUCN

No incluidaB

Categoría NOM-059-SEMARNAT-2010

No incluidaC

Estatus del taxón

(A) Probablemente una entidad natural (monofilética)

Discusión taxonómica

Cheilanthes clevelandii appears hairy adaxially because the ciliate scales on abaxial surfaces extend beyond the segment margins. It is close to C. covillei, but their ranges rarely overlap. Reeves (1979) recognized two varieties, var. clevelandii being widespread and var. clokeyi T. Reeves & Cochrane (ined.), confined to California. Cheilanthes covillei appears scaly only, has glabrous blades, and has costal scales ciliate only on basal lobes.A

Bibliografía

A. Mickel, J. T. & Smith, A. R. 2004: The Pteridophytes of Mexico Vol. 88
B. IUCN 2022: The IUCN Red List of Threatened Species. Versión 2022-2
C. SEMARNAT 2019: MODIFICACIÓN del Anexo Normativo III, Lista de especies en riesgo de la Norma Oficial Mexicana NOM-059-SEMARNAT-2010: 101 pp. – https://www.dof.gob.mx/nota_detalle.php?codigo=5578808&fecha=14/11/2019#gsc.tab=0 [accessed 2023-05-04 06:16]