106 Plant of Xew South Wales. 



culatum terminale peltatum totum a thallo formatum ej us- 

 que substantia cortical! similari undique obductum subcon- 

 colorum, ambitu immarginato plerumque ciliato. Ach. Syn. 

 Meth. Lich. p. 303. ejusd. Lich. Universal, p. 127. t. xiv. 

 f. 5. 



XJsNUA fasciata mihi. 



U. thallo pendulo scabriusotilo tereti glauco virescente 

 ramosissimo, ramis rectis nigro-fasciatis quasi articulatis, 

 raraulis ultimis capillaceo-attenuatis, fibrillis lateralibus nul- 

 lis, cephalodiis sparsis hemisphericis atris. 



Description. — From two to three inches long, and proba- 

 bly pendulous, roughened by minute papillae. Common trunk 

 short, about one line in diameter ; branches dense tapering to 

 a filament at the extremities and appearing 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 and irregular. 



Habitat. — On the perpendicular volcanic rocks of Nevr 

 Souih Shetland. 



Observations. — This species is nearly allied to Vsneaar- 

 ticulata 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, he. 



EXPLANATION OF THE PLATE. 



Fig. 1. The plant of its natural size. 

 " 2. A branch magnified. 

 " 3. A cephalodium magnified. 

 '■^ 4. A transverse section of the same highly magnified. 



