102 
tus laciniato-lobatus, lobis (sexpius) adpressis planis crenati 
subopacus, subtus fere concolor; apothecia badia vel badio- 
rufescentia, margine receptaculari integro; sport2e longit. 
0,011—19, crassit. 0,007—0,010 millim. 0 
Ad cortices (arborum frondosarum precipue) vulgaris. Quo- 
que ad ligna. ; 
x P. exasperata (Ach.) DN. , Nyl. Syn. p. 404; Parmelia 
olivacea var. idota Ach. — Similis olivacee, diderins autem 
thallo et receptaculo thallino apotheciorum papillis minutis (se 
arum prominulis) exasperatis;-sporae breviter ellipsoider, 
longit. 0,009—0,012, -crassit. 0,007—0,010 millim. -— Ad cor- 
tices arborum passim. 
» +» P, prolixa (Ach.) Nyl. Syn. p. 404. — Thallus ob 
scure olivaceus vel badio-geneus suborbicularis vel effusus la 
niatus, laciniis sat angustis et varie divisis multifidis planis 
plåniostalie, ambitu crenato-incisis, subtus nigricans (fibrill 
rhizineis mediocribus); apothecia fusca (latit. 4—12 millim.) 
margine receptaculari integro vel 'subintegro cincta; spore 
longit. 0,009—0,011, crassit. 0,005—6 (raro 7) millim. 
Supra saxa, presertim granitosa, in Scandinavia frequentissi 
Differt ab olivacea thallo NIKON angustius SS S la- 
coloris ab RR olvacel; saxicola vel muscicola, prasertim in' Ga 
vigens, sed etiam in Scandinavia Arte obvia. Forma contra m 
obscurior, thallo änn fuliginose furfuraceo vel tenuiter nigro 
dioso et margine receptaculari leviter crenulato est var. fuligin 
Er, in Dub. 1. €e.; in Europa temperata frequentior, in Scandinavia 
rior. Offert P. pro oliz xa quogue e formam suam pa nniform m Nyl.. 4 
ejus), minor, thallo obscure fusco vel olivaceo-nigricante adnato, lac 
ME ene et. ASEDA divisis, divisionibus interdum imbricatis; 
n Scandinavia.  P. stygia var. sorediata Ach. L. U. p- 471, Syn. P- 
ömt forma (sorediata) subsimilis dendritice,thallo adnato minore (I 
ril 
