CHARACTERS OF TRIBES AND GENERA, 
crossing the angular junctions of the venules, thus forming 
compital linear sori. The species are entirely Indian and 
Malayan, L. lanceolata being found in Mauritius and 
Bourbon. On account of the variations of size and texture, 
consequent on localities, about a dozen specific names have 
been applied to them, but the whole seems to resolve into 
a few species, of which the following are examples, 
In the “Species Filicum” the species of Loxogramma 
form part of the genus Gymnogramma, but they have no 
character in common with them except the oblique linear 
naked sori. 
Sp. L. lanceolata, Sw.; L. involuta, Don. (Grammitis 
flavescens, Wall.; G. macrophylla, Wall.; OG. acuminata, 
Wall.) ; L. advena, Bl.; L. coriacea, Pr. 
SERES 2.—Veins free. 
Sect, 2.—GYMNOGRAMMAZ. 
Veins generally forked, nearly their whole length occu- 
pied by the sporangia, forming forked, linear, naked sori, 
which are often confluent. 
20.—GYwxoanaMMA, Desv., in part (1811). 
Hook. sp. Fil., in part. : 
Vernation fasciculate, erect, acaulose, in some becoming 
ewspitose. Fronds varying from entire to decompound ` 
multifid, and from a few inches to 2 to 3 feet in length, or 
their apex continuous, indefinite, and climbing, smooth, 
villose, squamose, or farinose. Veins forked, venules free, 
: generally sporangiferous their whole length, forming linear 
sori, which are often confluent, naked. 
, Type. Acrostichum calomelanos, Linn. 
