E Tuckerman on North American Lichens. 203 
aries at DASYPOGA, sp. nova; thallo filamentoso rigidius- 
culo fragili tereti laevigato viridi-fuscescente (pallescente) ramis 
elongatis dichotome ramosis ultimis acuminatis nodulosis; a 
theciis concavis demum planis repandis margine tenui incurvo 
subcrenulato disparente. Spore ellipsoides uniseptatee curvule 
hyaline diam.’ duplo longiores—On trees and rocks in the 
mountains of Cuba, Mr. Wright. Allied to R. usneoides (Ach.) 
yl., which has also been found in Cuba, by the same unwearied 
collector, but differs in its regularly terete thallus, larger apothe- 
cia, &c. It is still more like a pendulous Usnea, or perhaps 
Alectoria; but possesses the spores of the present genus. ] 
anguloso Jacunoso-subcanaliculato opaco e viridi fuscescente, ra- 
mis irregulariter subdichotome ramosis patentibus, fertilibus su- 
perne incrassatis ; apotheciis terminalibus appendiculatis margine 
dentato-fimbriatis demum conyexis nigris.—On the bark of trees, 
trees | 
imen dark brown), Mr. ’ Beaumont ; Mississippi, Dr. Vettch ; 
oulsiana, Dr, Hale; (Cuba, Mr. Wright.)}—A smaller plant than 
either of the two ies of this group, of the northern 
Sphere, with much the lobation of 8. lomieralifern, but 
tu . and distinguished, so far as my sp 
80, from both, by its strongly pitted upper surface, and 
ate apothecia, which r: h those of 
the members of the gr lida, Hook. 
P a ee 
flomerules appear only on a Cuban specimen. ‘They are quite 
dike those of & iomeh ites: but the largest do not exceed a 
_ line in diameter.” The spores are more eye than those of 
_ the species just mentioned, and appear to be differently septate. 
