106 Plant of New South Wales. 
culatum terminale peltatum totum a thallo formatum ejus- 
que substantia corticali similari undique obductum saree 
colorum, ambitu immarginato plerumque ciliato. 
ote Lich. p. 303. 7% Lich. Universal. p. 121. t. xiv. 
Usnea fasciata mihi. 
U. thallo pendulo scabriusenlo tereti glauco virescente 
ramosissimo, ramis rectis nigro-fasciatis quasi articulatis, 
ramulis ultimis sapitlasoc-ettenuiii, ‘ibrillis lateralibus nul- 
lis, cephalodiis sparsis hemisphericis atris. 
Description.—F rom two to three inches long, and proba- 
bly hettedocn, roughened by minute papilla. Common trunk 
short, about one line in diameter ; branches dense tapering to 
a filament at the extremities and a ppearing beautifully articu- 
lated by transverse black bands; the joints rather longer 
than the diameter of the branches. Apothecia—none in 
the specimens I have seen. Cephalodia scattered, some- 
times crowded ane irregular. 
itat. the perpendicular volcanic rocks of New 
South Shetland. 
servations.—This species is nearly allied to Usnea ar- 
tieulata of Hoffman and the Flore Francais, which is con- 
sidered as a variety of U. barbata by Acharius, but the lat- 
ter is distinguished by its gray colour, dichotomous branches 
and ventricose joints, &c. 
EXPLANATION OF THE PLATE. 
Fig. 1. The oom of its natural size. 
ba ar = bra 
i 1; A:eephafodicm magnified 
“4. A transverse section of the same highly magnified. 
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