CHARACTERS OF TRIBES AND GENERA. 239 
Hook. Sp. Fil. 1, t. 21 A.; W. Peruviana, Hook. Sp. Fil. 1, 
t. 21 B.; W. incisa, Gillies, Hook. and Gren, Ic. Fil., 
f 191. 
Oss.— The two first are natives of Great Britain, chiefly 
found in Scotland and Wales, but rare. 
127.—Dtiacarpr, Blume (1828). 
Hook, Sp. Fil. 
Vernation fasciculate, acaulose. Fronds 2 to 3 feet high, 
stipate deltoid, decompound multifid; primary pinne alter- 
nate; ultimate pinnules small, }-inch in length, linear, 
obtuse, oblique, cuneate at the base. Veins simple or 
forked, free and clavate. Sporangiferovs receptacles medial, 
punetiform. Indusium globose, calyciform, opening irregu- 
larly, attached by a small point, including the sporangia, 
forming a sessile sorus. 
Type. Diacalpe aspidioides, Blume. 
Tust. Hook. and Bauer Gen. Fil., t. 99 ; Moore Ind. Fil., 
p. 81, fig. 1 to 4; Hook. Syn. Fil., t. 1, fig. 7. 
Ozss.— This genus consists of one species only, native of 
Java, Assam, and Moulmein. In general habit it resembles 
some of the multifid species of Lastrea and Polystichum. 
Its complete globose cup indusium is similar to the section 
Physematium of Woodsia, as also to the following genus 
Peranema, differing only in the sori not being pedicellate ; 
this, however, is more apparent than real, for in reality 
there is a slightly elevated point in Diacalpe, off which the 
entire sorus can be freely removed without rupturing the 
indusium or disturbing its sporangia. 
Sp. D. aspidioides, Blume. 
