142 



LICHENES. 



By Dii. J. MUELLER. 



[*Reprinted from " Hedwigia," heft 5, LS92.] 



Trib. Omphalarieae. 



1. Pyrenopsidium decorticans, J. Miill. 



Thallus olivaoeo-nigrioans, demum decorticando obscure fusco- 

 purpurascens, diffracto-areolatus ; areolae 1 mm. latae et 2-3-plo 

 minores, convexulae, liinc inde paucae connatae, fertiles quasi in 

 apothecium hemisphaericum vertico latiuscule foveolatum et sat 

 regulare et laeve abeuntes i discus poriformis ; sporae in ascis 

 circ. 30 — 40, globosae et globose -ellipsoideae, circ. 5 — 7 /x 

 longae ; gonidia saltem pro magna parte rubricosa, vulgo didyma, 

 hyphis varie moniliformibus cincta. _ ^ 



Species nulli nisi septentrionali Fyr. granulifonm, lorss. 

 Gloeolich, p. 60 (Norrl. Hb. Lich. Fenn., n. 354), affinis est et ab 

 ea jam extus forma et colore areolaruni laevium et ostiolis am- 

 plioribus diftert. 



S. A. Aroocillinna, ad saxa silicea. 



Trib. Cladonieae. 



2. Clathrina retipora, J. Miill., L.B., n. 589; ( Cladonia retipora, 



Elk., Clad., p. 181). W.A. Karelin. 

 3 Clathrina aggregata, J. MiiU., L.B., n. 589 ; (Cladoma aggre- 

 gata, Eschw. Bras., p. 278). W.A. Warrangermg ; 

 terricola. 



4. Cladonia alicornis, var. firma, Nyl. Syn., p. 191. S.A. Wa- 



wee Waterhole ; Everard Range. W.A. Victoria Desert 

 (Camps 62, 66). 



5. Siphula caesia, J. Miill. 



Podetia laxe caespitosa, circ. 6—12 mm. alta, suberecta, 

 superne undique caesia, inferne ochraceo-pallida, et e basi sub- 

 tereti longe albo-radioulosa, superne flabellatim divisa, divisiones 

 compressae, crassae, 1—2 mm. latae, nonnihil crenato-lobulatae 

 et apice bitido saepe transversim dilatatulae. Apothecia ignota. 

 Gonidia vulgaria, globosa, circ. 7 /x late. In lobulis hinc mde 

 occurrunt gibbositates erumpentes, majusculae, nigrescentes, 

 initia apotheciorum, secus lineam leviter intra-marginalem 



\^'ith corrected geographic references.— Ed. 



