Jamesoniane. gene i N. O. Filiecs. 
TAB. CLXXXVII. 
‘TRICHOMANES MONTANUM. 
Frondibus oblongis basi attenuatis subsessilibus pinnatifidis, 
laciniis obliquis oblongis obtusis subsinuosis fructiferis termi- 
nalibus cuneatis, involucro exserto urceolato apice bialato, 
columna longe exserta. | 
Has. On the trunk of a tree near La Sierra on the road to 
Esmeraldas, Colombia: elevation about 8,500 feet. Prof. 
W. Jameson. 
I am not aware that this can be confounded with any known 
species of Trichomanes. The caudex is slender, creeping, and 
partially clothed with rusty down. Fronds erect, oblong and 
SO tapering below as to be somewhat cuneate, nearly sessile, 
about 2 inches long, pinnatifid, nerved and finely reticulated : 
the fertile segments broader upwards, with a rather deep notch 
from which the involucre rises. This is wholly exserted, urceo- 
late, with 2 lips at the extremity which are compressed, broader 
than the tube. 
Fig. 1. Fertile segment :—magniied. 
a 
