BY EEV. F. E. M. WILSON. 173 



12. P. lacerahila, Nyl., = P. sulflava Tayl., fide Mull. Arg., 

 wliitish or albo glaucescent, thinly membranaceous, 1 to 3 

 inches wide, rugulose or passim smooth, lobato laciniate, 

 margin crenate or crenato incised, or oftener for the most part 

 lacero dissect or nearly isidioso dentate, beneath white, and 

 with concolorous fibrils few and longish. Apothecia badio 

 testaceous or pale badious, 2|-.to 3| mm. broad, receptacle sub- 

 podicellate, margin thin, entire, or sub-entire. Spores 

 •012 to -013 X -007 to -01 mm. 



Hab. Hook. L. J. Bot. 



13. P. adpressa, Krplb.; B. v. M., Yic, Nat., 1887, Oct. 



14. P. albata, Wilson, white or bluish-white, opaque, with 

 here and there sorediate patches, lobate or laciniato lobate, 

 undulate, lobes rotund, crenato incised, beneath white or 

 whitish, sometimes reddish- white, with scattered longish 

 fibrils, concolorous, or caerulescent, or cseruleo nigricant ; Med. 

 K yellow C — . Apothecia not seen. 



Hab. on rocks, Launceston. 



15. P. olivacea, L., olivaceo fuscous, orbicnhir or sub-orbi- 

 culnr, smooth or minutely corrugated or sometimes var- 

 nished, laciniato lobate, lobes appressed, plane crenate, sub- 

 opaque, under surface concolorous ; Med. K— C — . Apothecia 

 badious or badio rufescent, margin entire. Spores '01 to 

 •019 X -007 to -01 mm. 



Hab. on earth, rocks, and stones. Eichmond, Oldfield, 

 Hooker, Hook. Fl. Tasm.; Hobart, Launceston; Knocklofty, 

 Bastow. 



Var. prolixa, Ach. dark olivaceous, sub-orbicular or 

 effuse, laciniate, laciuiae narrow, variously divided, multifid, 

 plane, crenate, incised, under surface nigricant, fibrillose. 

 Spores -009 to -012 x '005 to -006 mm. 



Hab. Nyl. Probably subprolixa, a variety of P. imitatrix, 

 Tayl. 



16. P. lanata, L., nigricant or f usco nigricant, terete, slender, 

 decumbent, stragglingly ramose, entangled, nearly shining. 

 Apothecia lateral, concolorous, receptacular margin sub-entire 

 or nearly granular, unequal. Spores -009 to -012 X "007 to 

 •008 mm. 



Hab. Mount Welhngton, Brown, Cr. A filamentous form of 

 Umblicaria cylindrica, which is found on the mountain, is very 

 apt to be taken for this species. 



17. P. alpicola, Th. Fr., nigro olivaceous, crustaceo cartila- 

 ginous, orbicular or expanded, sub-opaque, lacinise convex, 

 rugoso plicate, imbricate and complicate, narrow, toruloso 

 intricate, apices incurved, under surface very black, sparsely 

 fibrillose; Med. K — C — . Apothecia nigricant, concave, margin 

 entire. Spores '007 to '012 X '005 to -009 mm. 



,, Hab. Mount Wellington. 



