INDEX LICHENUM BRITANNICORUM. 
59 
Gemis II. Dirina, Fr. 
Sp. 1 D. repanda (Fr.), Nyl. 
Sub-Tribe III. F. Peartusariei, Nyl. 
Genus I. Pertusaria, D. C. 
Sp. 1 P. bryontha (Ach), Nyl. 
2 P. dactylina ( Ach .), Nyl. 
3 P. Hutcbinsise (T. $• B.), Nyl. 
4 P. melanochlora ( D . C.), Nyl. 
5 P. monogona, Nyl. 
6 P. urceolaria, Nyl. 
7 P. concreta, Nyl. 
f. Westringii (Ach.), Nyl. 
8 P. communis, D. C. 
f. rupestris, D. C. 
9 P. areolata (Clem.), Nyl. 
10 P. ceuthocarpa ( Sm .), Hook. 
f. variolosa, Mudd. 
11 P. coccodes (Ach.), Nyl. 
f. bacillosa, Nyl. 
12 P. velata (Turn.), Mudd. 
f. aspergilla (T. B.), Cromb. 
13 P. globulifera (Turn.), Nyl. 
f. discoidea (Ach.). Nyl. 
14 P. multipuncta [Turn.), Nyl. 
15 P. amara (Ach.), Nyl. 
16 P. oplithalmiza, Nyl. 
17 P. reducta Strn. 
18 P. dealbata (Ach.), Nyl. 
f. corallina (L). 
19 P. lactea (Schcer), Nyl. 
20 P. pustulata (Ach.), Leight. 
21 P. melaleuca (Sm.), Leight. 
22 P. lactescens, Mudd. 
23 P. Wulfenii, D. C. 
f. carnea (T. § B.), Fr. 
p rupicola (Schcer.), Nyl. 
y glabrescens, Nyl. 
24 P. lutescens ( Hffm .), Nyl. 
25 P. leioplaca (Ach.), Schcer. 
26 P. glomerata (Ach.), Schcer. 
27 P. carneopallida, Nyl. 
28 P. xanthostoma, Smmrf. 
29 P. inquinata (Ach.), Fr. fil. 
30 P. nolens, Nyl. 
31 P. gyrocbeila, Nyl. 
32 P. fastigiata (T. B.), Leight. 
