PL cell. aph. 5. IDIOTH ALAMEAE. 126.Thelotr. 495 
Lichen argenu*, Achar. Prod, 8. 
Lichen agelceus, Achar. Prod. 30; Engl. Bot. 1923. 
Urccolaria agelaea, Achar. Meth. 150. 
Lecidea argena, Achar. Meth. 74. 
Lecanora verrucosa ,8 and y, Achar. Lich. 355. 
Thelotrema variolarioides agelEeum, Achar. in Act. Stockh. 33, 149. 
On the bark of old poplars and firs. 
VI. 127. PORINA. Acharius. Callus-moss. 
Thallus crustlike, cartilaginous, flat, expanded, adnate, 
uniform ; apothecia wartlike, formed of the thallus, not 
bordered; thalamium one or more, hidden within the sub- 
stance of the wart; penthecium simple, very thin, membra- 
naceous, transparent ; opening on the surface of the wart, 
coloured, thick; nucleus nearly globular, cellular, vesicle- 
bearing. 
1. Porina pertusa. Pierced callus-moss. 
Crust smooth, even, greyish white; apothecia nearly glo- 
bular, openings many, depressed, black. 
Lichenoides verrucosum et rugosum, cinereum, glabrum, Dillen Muse 
128. 
Lichen pertusus, Lin. Mant. 131 ; Engl. Bot. 677. 
Endocarpon pertusum, Wahlenb. Lapp. 459. 
Sphaeria melanostoma, Bern, in Romer Archiv. 4, 10. 
Thelotrema pertusum, Achar. Meth. 131. 
Porina pertusa, Achar. Lich. 308. 
On the bark of the trunks of trees. 
2. Porina hymenea . Maidenhead callus-moss . 
Crust greyish, growing uneven ; apothecia hemispherical, 
at length irregular, angular; openings many, cracked, 
widening. 
Lichen pertusus, Wulf.in Jacq. Coll. 2, 181. 
Lichen hymeneus, Achar. Prod. 80; Engl. Bot. 1731. 
Thelotrema hymeneum, Achar. Meth. 133. 
Porina lejoplaca hymenea, Achar. Lich. 310. 
Porina fallax hymenea, Achar. Syn. 120. 
On the bark of old oak-trees. 
D. Verrucaridte. Thallus crustlike; apothecia round, 
without any border; perithecium distinct. 
VII. 128. LEJOPPILEA. Acharlfis. Smooth-moss. 
Thallus crustlike, flat, expanded, adnate, uniform, carti- 
laginous, membranaceous, not cracked, smooth; apothecia 
with a nearly globular hemispherical thalamium, innate at 
