168 NEW. LICHENS. 
P. caperata, Ach., its thallus is far smaller, and its buds 
in powdery terminal crests of a bright gamboge yellow. a 
18. P. fulvella, Tayl.; thallo orbiculari, albido-fulvo, minu- - 
tissime albo-punctato, glabro, lobis rotundatis, subrugosis, - 
repando-erenatis, subtus. lanugine pruinata concolori — 
- devinetis ; gemmis Marine - statim lamelliformibus ; 2 
- apotheeiis tubuloso-pedicellatis, concavis, disco rufescenti, — 
margine tenui, inciso-crenato, extus villosis. 2 
Has. Casapí; Peru; Mathews, Hook. herb—Thallus E 
inches wide, pale tawney ash-coloured, the surface some- 
what reticulated with minute white dots; the colour is f 
unaltered by moisture. 'The buds of the apothecia are — 1 
villose, like the inferior surface of the thallus. By the T 
tubular podetia of the apothecia it is allied to P. perforata, — 
Ach. ; differing essentially from that species by its conspi- 
. cuous buds.  . 
19. P fistulata, Tayl.; thallo cæspitoso, procumbente, dicho- | 
. tomo, multifido, lævigato, albido, laciniis linearibus, con 
 Vexis, margine recurvis, subtus atro-fibrillosis ; - gemmis | 
albis minutissimis, confertis, subconfluentibus ; apotheciis 
- sessilibus, concavis, disco castaneo, margine incu 
subintegerrimo. 
Has. Tondil; rer Republic ; Tioeedie,. Hook her b, 
Monte Video ; Darwin.—Tufts several inches wide ;. lacir 
almost liant The buds germinate principally at 
_ tops of the lobes and expand into minute thalli. 
P. filamen mi Tayl. 5 tallo eaae 
