LICHENES ANTARCTICI. 655. 
sometimes entire, more commonly pierced all over; ultimate 
divisions either few or very many. 
136. R. verrucosa, n. sp.; thallo lutescenti plano ex basi 
lineari laciniato utrinque glabro longitudinaliter rugoso 
laciniis acuminatis, gemmis granulatis, apotheciis margi- 
nalibus demum planis concoloribus margine extus verru- 
coso-rugosis. 
Has. Falkland Islands. 
3-4 inches long, canaliculate, branched from the base, buds 
on the thallus flattened, but appearing on the backs of the 
apothecia as wart-like wrinkles. Thallus sometimes reticu- 
lato-perforate above. 
137. R. geniculata, n. sp.; thallo laxe cæspitoso albido-cinereo 
glabro dichotomo ramosissimo, ramis intricatis lobis linea- 
ribus hinc concaviusculis acuminatis, gemmis dispersis 
granulatis statim linearibus, apotheciis planis concoloribus 
margine tenui integerrimo subtus thalli laciniam emitten- 
tibus, 
Has. New Zealand. 
About 2 inches high. Branches sometimes pierced with 
à series of minute holes. The apothecia are merely marginal, 
9r more commonly a new branch of the thallus is sent off 
from beneath each, as in Usnea Jamaicensis, Ach., so that the 
“pothecium appears situated at the bending or knee of the 
thallus, 
-141. R. ovalis, n. sp.; thallo plano laxe cespitoso viridi- 
cinereo utrinque glabro erecto laciniis ex angusta basi 
ellipticis longitudinaliter rugosis margine integerrimis, 
Semmis terminalibus planis statim anguste ellipticis, apo- 
theciis centralibus confertis disco carneo-cinereo convexo 
demum corrugato margine tenui integerrimo. 
Han. Van Diemen's Land, on trees. 
This has the outline of Fucus ovalis; yet the buds Lo 
the ends of the lobes to appear laciniated ; similar buds some- 
times issue from the backs of the apothecia. Thallus l-2 
inches high, strongly veined and split between the veins 
towards the base, The constant breadth of the full grown 
