fertile pinnules with the opposite parallel sori, of Cryptogramma 
crisua. 1 possess a somewhat allied and I believe new species 
of this from Tweedie, South Brazil, with the copious fertile pin- 
nules, as narrow as, and a good deal resembling, an Onychiwm. 
Dzscr. The roof consists of fibres springing from a very short, 
knotted, woody caudex. Fronps tufted, ovate, bipinnate or, 
in the more luxuriant specimens, subtripmnate, submembrana- 
ceous, glabrous; pinz@ and pinaules opposite or mostly so. 
SrerILe FRonpDs (including the naked, slender stipes) scarcely a 
span high. Pinaules somewhat ovate or more frequently ob- 
ovate, coarsely and acutely serrated, tapering below into an 
oblique, cuneate base: veinlets terminating below each serra- 
ture, and clavate. Ferrite Fronps taller than the barren, 
sometimes a foot high: their pinnules oblong or almost linear- 
oblong, their sides nearly parallel and occupied by the opposite 
sori, and their rather narrow involucres, of which the sporangia 
almost meet at the costa; the apex alone coarsely incised, with 
a few (one to three) erect teeth. Under a magnifying power a 
few minute hairs may be seen at the base of the under side of the 
fertile pinnules, and the rachises are everywhere slightly winged 
or margined. 
Fig. 1. Fertile pinnule. 2. Sterile pinnule :-—magnified. 
