Asplenium stolonipes Mickel & Beitel
Descripción
Roots filamentous, fibrous, not proliferous; rhizomes suberect to erect; rhizome scales black, clathrate, but lumina almost totally occluded, 0.8–1.5 X 0.2–0.4 mm, entire; fronds clumped, 2–5(–7) cm long; stipes atropurpureous, lustrous, 4–35 X 0.2–0.3 mm, 1⁄3–1⁄2 of frond length, with sparse hair-like scales 0.5–0.8 mm long, not winged; blades 1-pinnate, 1.5–4(–6) X 0.5–0.8 cm, often bearing a proliferous bud at the bases of the blades (from each of which may arise a new plant); rachises atropurpureous, lustrous, with scattered dark-tipped glandular hairs 0.1mmlong, lacking wings; pinnae rhomboidal-trapezoidal, imbricate, 5–12 pairs, 2–3(–4) X 1.5–2 mm, articulate, rachis color not extending into pinna stalks, apices obtuse or rounded, margins entire to undulate on acroscopic sides; veins ca. 3 per pinna, tips evident adaxially, often producing lime dots; indument abaxially of whitish to tan glandular hairs 0.1 mm long; sori 1 or 2 per pinna, on both sides of midveins, or if only one then on the basiscopic side parallel to margin; indusia whitish, 1–2 X 0.5–0.8 mm, margins entire; spores reniform.A
Forma de vida
EpipetricA
Ejemplar revisado
Only from the type collection. Oax (Mickel 5376, NY!, UC).A
Distribución
México (Country) endemicB
Elevación
2450 mA
Ecología y Hábitat
In granitic rocks.A
Tipo de vegetación
Bosque de neblina/mesófiloA
Categoría IUCN
No incluidaC
Categoría NOM-059-SEMARNAT-2010
No incluidaD
Discusión taxonómica
Asplenium stolonipes forms colonies comprising a mass of miniature plants, mostly arising from buds on horizontal stipes. Mickel and Beitel (1988) compared it to A. fragile C. Presl (= A. peruvianum Desv., according to Tryon & Stolze, 1993) and A. tenue C. Presl (= A. triphyllum C. Presl, according to Tryon & Stolze, 1993), both from South America. Asplenium peruvianum differs in having green rachises with prominent wings (0.5 mm) and non-occluded clathrate scales, while A. triphyllum has trifoliate or more dissected pinnae. The South American
species are not closely related to A. stolonipes but do agree in the tendency to produce proliferous buds in the axils of proximal pinnae, a feature sometimes also found in the more widespread A. monanthes.
This species is actually most like a miniature form of A. monanthes, resembling it in the form of the pinnae and occluded rhizome scales. The combination of small size, dark rachises, proliferous buds at bases of blades, prominent hydathodes, entire indusia, and glandular hairs on the rachises and blades abaxially separate this from others with lustrous, dark rachises. Another close relative is probably A. soleirolioides, which differs in having flagelliform blades and with buds on the distal part of the rachises.
A
species are not closely related to A. stolonipes but do agree in the tendency to produce proliferous buds in the axils of proximal pinnae, a feature sometimes also found in the more widespread A. monanthes.
This species is actually most like a miniature form of A. monanthes, resembling it in the form of the pinnae and occluded rhizome scales. The combination of small size, dark rachises, proliferous buds at bases of blades, prominent hydathodes, entire indusia, and glandular hairs on the rachises and blades abaxially separate this from others with lustrous, dark rachises. Another close relative is probably A. soleirolioides, which differs in having flagelliform blades and with buds on the distal part of the rachises.
A