Monographs Details: Adiantum wilsonii Hook.
Authority: Proctor, George R. 1989. Ferns of Puerto Rico and the Virgin Islands. Mem. New York Bot. Gard. 53: 1-389.
Description:Species Description - Rhizome short- to long-creeping, densely
clothed with yellow- or orange-brown, linear to
lanceolate, clathrate scales 0.5-1 mm long, these
with minutely denticulate and ciliolate margins.
Fronds few, erect, closely distichous, 20-50 cm
long; stipes lustrous purple-black, 12-40 cm long,
much longer than the blades, sparsely appressedpubescent
with brown hairs. Blades broadly
ovate, with 1-3 pairs of pinnae and an equally
large terminal one; rhachis and pinna-stalks appressed-pubescent; lateral pinnae curved-lanceolate
to ovate, 6-12 cm long, 2-4.5 cm broad,
acuminate and more or less falcate at apex, and
truncate, rounded, or cordate at the somewhat
inequilateral base, on stalks 1-4 m m long; sterile
margins inegularly senate; fertile margins entire;
veins immersed, partly anastomosing, partly free;
tissue dark green, firm or subcoriaceous. Indusioid
flap dark brown, entire, bearing minute
whitish linear cystoliths.
Type. N. Wilson, from near Bath, Jamaica (K, photos G H , US).
Distribution:Mexico North America
| Central America