Asplenium olivaceum A.R. Sm.
Descripción
Roots thin, fibrous, not proliferous; rhizomes erect; rhizome scales black, clathrate, 2–3 X 0.5–0.8 mm, entire; fronds clumped, to ca. 15 cm long; stipes atropurpureous, lustrous, 1.5–2 cm X 0.6 mm, 1⁄5–1⁄3 of frond length, with scattered, hair-like scales 0.8–1 mm long, not winged; blades 1-pinnate, 5–15 X 0.8–1.5 cm, apices pinnatifid, not proliferous; rachises reddish brown to atropurpureous, lustrous, with rare to sparse clavate hairs, adaxially with minute wings; pinnae oblong, 6–15 pairs, opposite, 4–8 X 3.5–5 mm, dimidiate, pinnae articulate, rachis color not extending onto pinna stalks, apices obtuse, margins entire to slightly undulate acroscopically; veins simple or 1-forked at the acroscopic base, tips evident adaxially; indument abaxially with sparse, appressed, clavate hairs; sori 1 or 2 per pinna, largest sorus of a given pinna parallel to the basiscopic pinna margins, sori on acroscopic side of pinnae oblique with respect to midveins, or 2–3 pairs per pinna on both sides of midveins; indusia whitish to gray, (1–)2–3 X 0.8–1 mm, margins minutely ± entire to slightly erose; spores reniform.A
Ejemplar revisado
Chis (Breedlove 22379A, DS, ENCB; Rzedowski 669, ENCB). Oax (Mickel 7059c, NY).
Unverified, Doubtful, or Mistaken Reports. Méx (Flores X. 45, IZTA, cited by Tejero-Díez & Arreguín-Sánchez, 2004, but the specimen is A. castaneum).
A
Unverified, Doubtful, or Mistaken Reports. Méx (Flores X. 45, IZTA, cited by Tejero-Díez & Arreguín-Sánchez, 2004, but the specimen is A. castaneum).
A
Elevación
1300–2900 mA
Ecología y Hábitat
Limestone cliffs.A
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Among the small-bladed taxa with lustrous, castaneous stipes and rachises, A. olivaceum has prominent hydathodes (unlike A. resiliens and A. palmeri), is nonproliferous (unlike A. palmeri and A. stolonipes), has minute wings (unlike A. resiliens, A. palmeri, and A. oligosorum, which have wings 0.1–0.3 mm wide), nonoccluded clathrate rhizome scales (unlike A. resiliens, A. palmeri, and A. stolonipes), and small (1–3 mm long) indusia (unlike A. oligosorum).
Breedlove 31818B (DS), from Chiapas, is close to A. olivaceum but differs in the more oblong, narrower segments. Possibly it is undescribed.
A
Breedlove 31818B (DS), from Chiapas, is close to A. olivaceum but differs in the more oblong, narrower segments. Possibly it is undescribed.
A