TAB. XCIII. 
Lastrea Borneensis, Hook. 
Fronde pinnato-pinnatifida (an bipinnata?) acuminata mem- 
branacea glabra, pinnis lanceolatis inferioribus longe anguste 
acuminatis profunde pinnatifidis, lobis oblongis acutis pinna- 
tifido-serratis, lobulis serraturisve obtusiusculis, soris in 
medio venularum, involucris reniformi-orbicularibus venam 
centralem spectantibus, racbibus costisque pubescentibus. 
Hab. Borneo, near Sarawak, Thos. Lobb . 
I possess only a portion, it would appear, of this frond, at 
any rate no stipes nor caudex ; and in general form this has 
affinity with many species of this extensive genus. There is 
however, a peculiarity in the direction of the involucres, which 
strikes me as being unusual. The veinlet on which the 
involucre is placed forms an angle at or near the middle, and 
from that angle the sorus and involucre appear to spring, and 
the latter is not directed towards the apex of the lobule 
following the direction of the veinlet, but is free from it and 
has an oblique direction towards the main or central vein. 
Fig. 1. Under side of a lobe with sori. f. 2. Single sorus : 
— magnified. 
