Cyathea jamaicensis Jenm.

Cyathea jamaicensis Jenman, Jour. Bot. 20: 323. 1882
Caudex 3-4 meters high, ** smooth and naked below, scaly at the top" ; fronds ample, 2 meters or more long, 45-60 cm. broad, tripinnatifid, acuminate, tapering below, scarcely stipitate, the lower pinnae greatly reduced, the rachis pale-brown, smooth, glabrous; characteristic pinnae 30-40 cm. long, 5-6 cm. broad, sessile, spreading, approximate, acuminate, the secondary rachis pale-brown, appressed-hirsute above, below nearl}' naked, with a few reduced brownish stellate scales; pinnules strictly sessile, 2.5-3 cm. long, 8-12 mm. broad, lanceolate, deeply pinnatifld, the apex broad, serrulate or subentire, acute, the costa smooth or nearly so on both surfaces ; segments 6-8 pairs, triangular to oblong, 2.5-3 mm. broad, unequal in length, the apex subacute, the costule bearing a few minute whitish bullate scales ; veins 3-6 pairs to each segment, mostly simple ; sori basal upon the lowermost veins, usually one or two to each segment; indusia small, dark -brown, shallow; receptacle stout, obconical, fragile, long-exserted beyond the even firm margin of the indusium.
Type locality: Vicinity of Mansfield, above Bath, Jamaica. Distribution : Known only from the t3'pe specimens (Wilson 686).