INDEX LICHENUM BRITANNICORUM. 
75 
7 P. dissecta, Nyl. 
8 P. revoluta ( Flk .), Nyl. 
f. 1, rugosa ( Tayl .), Cromb. 
2, panniformis, Cromb. 
3, concentrica (height.') f Cromb. 
9 P. tiliacea (Hjfm.), Ach. 
# P. carporhizans ( Tayl.), Nyl.' 
10 P. scortea, Ach. 
IIP. saxatilis (L.), Ach. 
f. 1, furfuracea, Schcer. 
2, panniformis, Ach. 
12 P. sulcata, Tayl. 
(3. laavis, Nyl. 
13 P. omphalodes ( L .), Nyl. 
f. 1, cassiopruinosa, Nyl. 
/3. panniformis (Ach.), Nyl. 
f. 1, glomulifera Cromb. 
2, subconcentrica, Cromb. 
14 P. Borreri, Turn. 
B. Ochroleucae. 
15 P. caperata (L.), Ach. 
16 P. sinuosa (Sm.), Ach. 
17 P. conspersa ( Ehrb .), Ach. 
f. 1, isidiata ( Anzi ), height. 
2, stenophylla, Ach. 
18 P. Mougeotii, Schcer. 
f. 1, dispersa, Cromb. 
19 P. incurva (Pers.), Fr. 
C. Olivacete. 
20 P. Acetabulum (Neck.), Dub. 
21 P. olivacea (h.), Ach. 
22 P. exasperata (Ach.), Nyl. 
23 P. subaurifera, Nyl. 
24 P. prolixa (Ach.), Nyl. 
/3. sorediata (Ach.), Nyl. 
* P. Delisei (Dub.), Nyl. 
/3. isidiascens, Nyl. 
25 P. fuliginosa (Fr.), Nyl. 
(3. ketevirens (Fr.), Nyl. 
* P. glabratula, hamy. 
26 P. stygia (h.), Ach. 
27 P. lanata (L.), Nyl. 
(3. reticulata (Wulf.), Cromb. 
28 P. tristis (Webr.), Nyl. 
# Hypogymnia, Nyl. 
29 P. physodes (h.), Ach. 
f. 1, labrosa, Ach. 
2, tubulosa, Schcer. 
(3. platyphylla, Ach. 
