476 115. Lecidea. 4. CENOTHALAMEfE. Pl.cell.aph. 
58. Lecidea aurantiaca. Orange lecidea . 
Crust cartilaginous, determinate!}^ figured, smooth, un- 
eveivwidely cracked, whitish ; apotkecia crowded, growing 
convex, hemispherical, orange-yellow ; border thin, paler, 
not cut, at length nearly disappearing. 
Lecidea aurantiaca, Achar. Meih. 69 ; Lich. 201. 
On the trunk of the trembling poplar. 
F. Gyiiophokide^e. Thallus shieldlike, free under- 
neath; apothecia dattish, plaited, bordered. 
XXVI. 1 16. GYROPHOR A. Acharius. Brain-moss. 
Thallus leaflike, leatherlike, cartilaginous, shieldlike, 
one-leaved, when luxuriant many-leaved, underneath free; 
apotkecia nearly saucerlike, sessile, adnatc, covered with a 
black cartilaginous membrane, including a similar, slightly 
solid parenchyme ; centre warty or meanderingly plaited in 
circles, and bordered. 
1. Gyropkora glabra. Bald brain-moss. 
Thallus nearly bald, greenish black, underneath naked, 
smooth, very black ; apotkecia grow convex, wrinkly 
folded. 
Lichenoides (enue pullum, foliis utrinque glabris, Dillen Muse, 225. 
Lichen glaber, Achar. Prodr. 144. 
Lichen anthracinus, Jacquin Miscell.2. 
Umbilicaria anthracina, Hoffm. Germ. 111. 
Gyrophora anthracina, Achar. Meth. 102. 
Gyrophora heteroides a and y, Achar. Lich. 218. 
Gyrophora, Achar. Meih. 101. 
On stones and mountains. 
/3. polyphylla. Thallus many-leaved, folded, greenish- 
black, underneath black; both sides naked, very smooth. 
Lichen pulyphyllus, Lin. S. P. 1618; Engl. Bot. 1282. 
Umbilicaria polyphylla, Hoffm. Germ. 109. 
Gyromiutn polyphyllum, Wahlenb. Lapp. 434. 
Gyrophora heteroides /5, Achar. Lich. 219. 
Gyrophora glabra polyphylla, Achar. Meth. 101. 
2. Gyrophora proboscidea. Proboscis brain-moss. 
Thallus membranaceous, wrinkled in network, afterwards 
rough scaly, olive-grey; underneath smooth, paler slightly 
fibrilled ; apothecia topshape, afterwards convex, meander- 
ingly plaited. 
