BOTANY. 
375 
white Lichens found on the rocks on the barren outskirts of the 
Island, of a very brittle nature ; the branches flat and broad, with 
a horny appearance. Found also in Great Britain. 
985. R. ceruchis, D.N. — A species gathered by Dr. Burchell. 
Fertile. 
Stictina, Nyl. 
986. S. tomentosa, (Sw.) — A jelly-like, butterfly-shaped Lichen, 
of a chocolate-brown colour, with dull red spots, found growing on 
the branches of the native Cabbage-trees on the high ridge at Diana s 
Peak, about 2700 feet above the sea, in a moist atmosphere. Fertile. 
987. S. crocata, (Ach.) — Another species, from similar localities 
to the last. — Found also in Great Britain. Sterile. 
Sticta, Ach. 
988. S. aurata, Ach. — Perhaps of all, this is the most beautiful 
Lichen found in the Island. In its mat-like form it is abundantly 
met with, covering the branches of fruit and forest trees, on the 
central ridge, at Diana’s Peak, &c. Alt. 5 '4. It is most rich in 
colour, sometimes entirely of a brilliant golden hue. It is seen 
partially covering the dead brown leaves of the Tree-fern 
( Dichonia arborescens ) and the Cabbage -trees ; in other places it is of 
a bright copper-colour, touched with gold; then of a deep red, with 
golden spots; and again, of a bright rich green, with golden 
underside and margins. It is also found in Great Britain. Sterile. 
Bicasolia, De. Not. 
989. R. herbacea, D.N. — A Lichen, gathered by Dr. Burchell. 
Fertile. 
Parmelia, Ach. Nyl. 
990. P. perlata, Ach. 1 The most abundant of all 
991. P. perlata, var. ciliuta, D.C. ) the Lichens; found grow- 
ing generally upon the stems and branches of trees inland, and upon 
rocks &c., on the outskirts of the Island. It is of a flat, mat-like form, 
and plays an important part in the general landscape. The soft grey 
colour of the basaltic rocks and distant barren lulls, which contrast 
so prettily when viewed in close proximity with bright green fields 
and foliage, is occasioned by this plant. Found also in Gi eat Biitain. 
