Spruceane. N. O. Filices. 
DCCCCLXXXI. 
‘TricHomanes SPRUCEANUM, Hook. 
Frondibus difformibus rigido-membranaceis bipinnatifidis, lobis 
primariis oblongo-ovatis obtusis secundariis _ bi-trifidis 
rachibus subtus longe hirsutis sterilibus brevi-stipitatis 
latissime ovatis lobis imbricatis, fertilibus longissime stipi- 
tatis contractis oblongis obtusis, involucris cylindraceis in 
loborum apices omnino immersis, columna inclusa, stipitibus 
alatis, caudice longe repente setaceo-squamoso. 
Haz. San Gabriel-catingas, Rio Negro, a tributary of the 
Amazon, June 1852, Spruce, n. 2334.* 
No one can fail to see a great similarity between the 
Trichomanes heterophyllum, H.B.K., figured by Kunze, Fil. 
é distinct: our plant 
is nowhere pinnate, and the lobes both of the sterile and 
_ fig. 1. Portion of a sterile frond. f, 2. Portion of a fertile 
ditto. f. 3. Involucre :—magnified. 
ei ea 
» 
