140 TASMANIA^ LICHENS. 



wards expanding into a larger frond, whicli is much sinnated 

 and tomentose benoath, with rather shaggy down, as in 

 Leptogium saturninum (to which, however, this cannot belong, 

 not being a Leptogium), and then resembling a young frond 

 of Stictina fuliginosa. Apothecia piano concave, dull red, 

 fringed with the minute, crenated thallodal at margin, then 

 convex, emarginate." 



Sub-genus Synechohlastus. 

 Spores narrow or fusiform. 



6. C.nigrescens,'H.Vidi^., nigro virescent,thin, membranaceous, 

 sub-monophyllous, orbicular, depressed, rotundo lobate,radiato 

 rugoso plicatulate, naked or granulate, ascending in the 

 centre, depresso adnate at the circumference. Apothecia dark 

 rufous, plane, small, crowded, thalline margin entire. Spores 

 fusiformi cylindrical, pluri-septate, '034 to '042 x "005 mm, 



Hab. on old trees by Derwent River, Brown, Cr. 



6. C. leucocarpum, Tayl. C. nigrescens vtr. leucocarpum of 

 Babington, olivaceous, foliaceo membranaceous, 1 to 3 inches 

 diam., smooth, lobate, lobes rotundate, undulate and plicate, 

 margin flexuous. Apothecia often crowded, albo carneous, 

 convex, pruinose, margin entire, at length withdrawn. Spores 

 elongato fusiform, often acuminate at apices, 3 to 5 septate, 

 •03 to -05 X 006 to -01 mm. 



Hab. on trees, Derwent River, Brotvn, Cr.; Hook. L. J. 

 Bot.; Circular Head, Gunn, Hook. Fl. Tasm.; Krplh.; Stuart in 

 herbar. Bot. Mus., Melb.; Moimt Wellington, fand Weymoidh) 

 Brown's River, St. Mary's Pass; Macrobie's Gully, and 

 New Town Falls (Bastow). Mr. Crombie says = C. glmicoph- 

 tlialmum, Nyl., which is a mistake. Though somewhat alike, 

 they are quite distinct. C, glancophthahnum is frequent in 

 Yictoria, but has not yet been found in Tasmania. It is 

 likely, however, uo occur associated with C. nigrescens. 



7. C. aggregatum, Ach., var. thysancEum, Moug. C. thysmiceum, 

 of Babington, nigrescent, membranaceous, lobate, plicate, 

 difformed, lobes sometimes crenate, margins often granuloso 

 crispate. Apothecia dark rufous or rufous, moderate, 

 crowded, with thin thalline margin. Spores 8 or 6, fusiformi 

 cylindrical, j)luri septate, not rarely somewhat curved, "033 to 

 •065 X -004 to 005 ram. 



Hab. on bark, Cheshunt, Archer. Hook. Fl. Tasm. 



8. C. quadriloculare, Wilson, var. Tasmanics, Wilson, fusco 

 olivaceous or nigricant, membranaceous, adhering, lobate, 

 thicker at circumference, crisped. Apothecia moderate, 

 crowded, black or rufous black, plane, or somewhat concave, 

 •with entire thalline margin. Spores cylindrical, rounded at 

 each ai)ex, somewhat curved, 8 locular, '04 to "05 x '003 to 



