CHARACTERS OF TRIBES AND GENERA. 991 
trade Catalogue of Mr. Stansfield, of Todmorden, no less 
than 96 of these names are given under Polystichum aculea- 
tum and angulare, and 66 under the British species of the 
genus, Lastrea. 
113.—AcropHorvs, Presl (1836). 
Aspidium Blume, Wall. ; Davallia Sp. Hook. 
Vernation fasciculate, erect, sub-arboroid. Fronds 4 to 6 
feet high, stipate, deltoid, decompound multifid ; primary 
pinne opposite, 1 to 1} feet long, patent, their petioles 
short, forming with the rachis a thickened node, and 
furnished with a deciduous stipuliform scale; ultimate 
pinnules or segments sessile, $ of an inch long, oblong, 
oblique cuneiform, lobed or crenate on the upper edge. 
Veins pinnate; venules simple or forked, free, setulose 
on the upper side.  Sporangiferous receptacles terminal, 
marginal. Sori punctiform, one, two, or three on each 
segment. Zndusium sub-orbicular, laterally attached by its 
broad base on the inner side of the receptacle, at first 
cucullate, but at length reflexed. 
Type. Aspidium nodosum, Blume. 
Illust. Presl, Tent. Pterid., p. 49, t. 3, f. 2. 
Oss.— This genus is founded upon a remarkable Fern, a 
native of India, Java, and other Malayan Islands. Like 
many other Ferns, its habit alone is sufficient to mark it 
as a distinct genus, but in venation and character of its 
sori it differs but little from Lastrea, the principal difference 
being in the form of the indusium, which is attached by its 
broad base, as in the Eremobryos genus Leucostegia ; and 
on that character alone Mr. Moore places the species of 
Leucostegia under Acrophorus, in habit as two genera they - 
are, however, quite distinct, 
