NEPHRODIUM,
§
LASTREA.
147
foot long, fronds 6 - 1 2 inches long firm-membranaceous subcoriaceous pale-green soft-villous (the costoe pubescent on
both sides) deltoideo-ovate acuminate b i - below tripinnate,
primary pinnae petiolate 2 - 6 inches and m o r e l o n g broado b l o n g acuminate, basal pair half-ovate, lowest inferior se­
condary pinnae the longest, uppermost primary pinnae pinnatifid, pinnules petiolate from a cuneate base obliquely ovate
subauriculate entire or lobato-pinnatifid, the lobes short
acute, the superior base truncate, veinlets twice or thrice
forked here and there anastomosing, sori small distant in two
series between the costule and the margin, involucre small
reniform membranaceous villous.—Hook, et Grev. Ic. Fil. t.
1 0 2 [young specimen). A s p i d i u m , Stv. Syn. Fil. p. 5 6 .
Willd.
Sp. PL v. p. 2 7 1 . Lastrea, Pr. P o l y p o d i u m , Linn.
Phegopteris Portoricensis, Fee, Gen. Fil. p. 3 4 3 .
Metten. Aspid. p.
14.
Eat. Fil. Fendl. et Wright, p. 2 0 8 .
Hab. Jamaica, Swartz, Wilson, Purdie.
Cuba, C. Wright, n. 815, 11. 1000,
large, 1 foot long. Porto Rico, Baron de Schach. Guadeloupe, Beaupertuis, u. 1164
{ex Herb. Mus. Hist. Nat. Paris).—Very
variable in size. The Plieijopteris Porto­
ricensis of Eaton, in C. Wright's Fl. Cub. n. 1000, is a large form of ibis species,
in which the involucres have been overlooked or, possibly, are^suppressed.
1 4 7 . N . (Lastrea) acutum, H o o k . ; caudex ?, stipes 2 feet
and m o r e l o n g thicker than a goose-quill chestnut-brown
smooth without scales (unless at the base, which I have not
seen), fronds ample 2 feet long broad-ovate firm subcoriaceomembranaceous acuminate, primary pinnae petiolate ovatolanceolate finely acuminate pinnatifid at the apex the rest
pinnate, pinnules sessile 1—3 inches l o n g lanceolate l o n g acuminate deeply pinnatifid, segments o b l o n g very acute subfalcate acutely and often pungently serrated, veinlets simple
distant, sori in two series between the costule and the margin,
involucre dark-brown cordato-reniform.
(TAB. CCLXX1.)
—Lastrea acuta, Kl. in Herb, nostr.
Hab. Brazil, Selloiv, in Herb, nostr.
Near Tatapota, Eastern Peru, Spruce, n.
4662.—This has the largest p i n n s and pinnules o f any o f the polystichoid Nephrodia known to m e . I am indebted to the late D r . Klotzsch for an authentic
specimen. Spruce's n. 4 6 6 2 , from Tarapota, appears to me to be quite the same
species. I cannot find that Klotzsch has anywhere published it.
148. N . (Lastrea) denticulatum,
H o o k . ; caudex
stout oblique densely clothed with long linear-subulate
brown falcate glossy scales j - § inch long, stipites
scaly at the base 1 - | foot long brown or stramineous,
short
darktufted
frond