Cheilanthes spiculata Mickel
Descripción
A C. marginata laminis angusti-dentatis et paginis adaxialiter spiculatis abstans. (Alluding to the abundant spicules near the adaxial segment margins and the indusial-laminar interface.)
Rhizomes compact, horizontal to ascending, 1–2 mm diam.; rhizome scales linear-subulate, bicolorous, black with narrow brown to tan margins, lustrous, 3 mm long; fronds 16–32 cm long, clumped; stipes 1⁄2–3⁄4 the frond length, atropurpureous, lustrous, grooved, glabrous; blades narrowly deltate, mostly bipinnate, to tripinnate at base; segments elliptic, acute; adaxial surfaces spiculate near the margins; abaxial surfaces glabrous; laminar margins recurved, strongly modified into 0.4 mm wide false indusia with long-fimbriate margins (hairs 0.3 mm long), very long-decurrent to next segment with spicules along indusiallaminar interface; spores brown.A
Rhizomes compact, horizontal to ascending, 1–2 mm diam.; rhizome scales linear-subulate, bicolorous, black with narrow brown to tan margins, lustrous, 3 mm long; fronds 16–32 cm long, clumped; stipes 1⁄2–3⁄4 the frond length, atropurpureous, lustrous, grooved, glabrous; blades narrowly deltate, mostly bipinnate, to tripinnate at base; segments elliptic, acute; adaxial surfaces spiculate near the margins; abaxial surfaces glabrous; laminar margins recurved, strongly modified into 0.4 mm wide false indusia with long-fimbriate margins (hairs 0.3 mm long), very long-decurrent to next segment with spicules along indusiallaminar interface; spores brown.A
Ejemplar revisado
Known only from the type. Méx (Hinton et al. 6837, NY, F, LL, TEX).A
Distribución
México (país) EndémicoA
Categoría IUCN
No incluidaB
Categoría NOM-059-SEMARNAT-2010
No incluidaC
Discusión taxonómica
Cheilanthes spiculata resembles C. marginata in the broad, long-decurrent indusia but is distinct in the narrowly deltate blades and abundant spicules on the adaxial blade margins.A