Asplenium soleirolioides A.R. Sm.
Descripción
Roots filamentous, fibrous, not proliferous; rhizomes erect; rhizome scales black, clathrate, 2–4 X 0.3–0.5 mm, entire; fronds arcuate to decumbent, mostly 4–10 cm long; stipes castaneous, lustrous, 0.4–2 cm X 0.3–0.4 mm, 1⁄5 of frond length or usually much less, with rare, hair-like, clathrate scales 0.5–1 mm long and sparse clavate hairs 0.3 mm long, not alate, but with two faint adaxial brown ridges; blades thin-herbaceous, 5–9 X 0.6–0.8 cm, 1-pinnate, linear, apices subconform or proliferous, buds along rachises in axils of distal pinnae eventually rooting; rachises castaneous, lustrous, with scattered dark-tipped glandular hairs 0.1–0.2 mm, not winged; pinnae round-obovate to subrhomboid, 8–20(–23) pairs, 2–4 cm X 0.5–2 mm, articulate, usually alternate, apices rounded, margins entire; veins simple, 2–3 per pinna, tips evident adaxially; indument abaxially of sparse, appressed whitish to tan, clavate hairs 0.1–0.2 mm long; sori 1 or 2 per pinna, the larger (and sometimes only) one along the basiscopic side of midveins; indusia whitish, 1–2 X 0.5–0.8 mm, margins entire or erose; spores reniform.
A
A
Ejemplar revisado
Chis (only the type). Gro (Lorea 3130, FCME, NY; Reveal et al. 4251, US; Velázquez 822, FCME). Hgo (Medina-Cota & Barrios 3730, CAS, NY). Jal (McVaugh 26139, MEXU, MICH). Mich (Carranza & Zamudio 4227, IEB, UC). Oax (Mickel 5386, 7034, NY; Smith 509, UC). Qro (Díaz B. 4930, IEB, XAL).A
Distribución
México (Country) endemicB
Elevación
2100–2900 mA
Ecología y Hábitat
On shaded limestone rocks, by streams.A
Tipo de vegetación
Bosque de pino, Bosque de otro tipoA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Several other small spleenworts have a similar appearance. Among them are Asplenium stolonipes, which is also small in stature, has castaneous lustrous stipes, small indusia, and proliferous from buds in the axils of the proximal pinnae; it differs from A. soleirolioides in having smaller occluded rhizome scales 0.8–1 mm long, shorter fronds 1.7–4 cm long, and occurring on granitic rocks. Asplenium harrisii has similar pinnae except they are deeply lobed and the stipes and rachises are alate and green. Asplenium clutei Gilbert (isotype Clute 118, NY!), from Jamaica and Hispaniola, has lobed to barely 1-pinnate pinnae with marginal glands and rhizome scales with glandular margins.A