‘THALLOGENS. 18 
THE LICHENAL ALLIANCE (V. K., p. 45.) 
To a considerable amount of nutritious gelatinous matter is here added 
variable quantity of bitterness, which renders the species tonic and stomac 
Some are among the most valuable dyeing plants ; others supply food 
animals, as the Cenomyce to reindeer. 
GyropHora. Acharius. 
Thallus leafy, horizontal, peltate. Shields round, sessile, adnate, cover 
with a black membrane, the surface marked y 
circles or plaits. 
1. G. proboscidea Acharius.—(TRrE DE Rocus 
Fig. 35. ) 
Thallus membranous, wrinkled, with elevated netti 
smoky brown, lobed and notched at the ed, 
shields convex, plaited. 
Habitat. Mountainous and very northern regions, on rocks. 4 
Quality. Nutritious, bitter, nauseous, purgative. 
Uses. Food in arctic regions. 
2. G. erosa Acharius.—(TRIPE DE Rocue.) 
Thallus membranous, wrinkled, almost black, irregularly lobed, perfora 
at the circumference, and notched ; shields convex, variously plaited. 
Habitat. Mountainous, and very northern regions, on rocks, 
Quality. Like the last. 
Cenomyce. Acharius. 
Thallus shrubby, perpendicular, branched, usually covered with leafy sea 
Shields sessile, round, convex, without a border, the sides reflexed 
1. C. rangiferina Acharius.—(Reinpeer Moss.) Fig. 39. 
Stalks of the shields erect, long, rough, cylindrical, greenish white, v 
es much branched; the axils pierced; the brane 
scattered, entangled; shields roundish,. brown, | 
small erect stalks. 
Habitat. Moors, heaths, especially mountainous or northern. 
Quality. Nutritious. 
Uses. Constitutes important food for reindeer and other anit 
in high northern latitudes. 
2. C. pyaidata Acharius.—(Cur Licnen. Cur Mo: 
Fig. 33. ; 
Thallus leafy, erect, the lobes crenulate, forming lo 
granulated, rough greyish green cups, on the ¢ 
of which stand the brown convex shields. 
Habitat. Moors and dry woods. = 
Quality. Bitter, gelatinous. 
Uses, Hooping-cough ; as Iceland Moss. Febrifugal. 
Fig. 32.—Magnified shields of Gyrophora; 33. Cenomyce pyxidata, a little larger than natural si 
* By some mistake a figure of Peltidea aphthosa is given for this by Dr. Pereira, 
