176 TASMANIAN LICHENS. 



10. Theloschistes. 

 Thallus laciniate, generally stellato orbicular. Apothecia 

 orange or yellow. Spores coloarless, polari bilocular. 



1. T.flavicans, Sw., yellow or orange-yellow, csespitose, sub- 

 terete, slender, entangled, mucb branched, branches attenuate, 

 furcellate at apices. Apotbecia orange or rufous orange, 

 margin thin, sub-entire. Spores elliptico oblong, '012 to 

 •018 X -007 to -Oil mm. 



Hab. B. V. M., Vic. Nat., 1887, Oct. 



Var. suhexilis, Nyl., = Physcia subexilis of Crombie, smaller, 

 csespitose. orange-yellow throughout. AjDothecia saffron 

 oransre, 1 to 2 mm. wide, thalline margin at length excluded. 

 Spores -Oil to -015 x -006 to -008 mm. 



Hab. on rocks, Kent Island, Brown Or.; B. v. M., Vic. 

 Nat., 1887, Oct. 



2. T. chrysophthalmus, L., yellow or flavo albicant, or flavo 

 cinerascent, rigescent narrowly laciniate, laciniae ascending, 

 divaricato multifid, apices filbriloso ramulose or spiuose, 

 whitish beneath. Apothecia orange, margin filbriloso ciliate, 

 sometimes naked. Spores elliptico oblong, "Oil to -017 X 

 •006 to -01 mm. 



Var. Sieberi, Mull. Arg., = Pannelia spinosa of Taylor. 

 Hab. on basaltic rocks, George Town, Gimn, Hook, Fl., 

 Tasm.; Hook. L. J. Bot.; Krplh.; Launceston. 



3. T. velifer, Wilson, yellow, or in the sun orange, \ inch, 

 or less broad, sociable, laciniolate, laciniae somewhat convex, 

 beneath albid, sub-canaliculate, with concolorous ciliae, the 

 apices ascending, elongate, applanate, inflated, with their lower 

 cortex and the medulla usually wanting, and often exposing 

 copious green or yellow gonidia. Apothecia orange rufous, I 

 to 2 mm. broad, at length sub-cephaloid, much elevated, 1 to 

 2 mm. high, arising from the base of the thalline apical lobes. 

 Spores -01 x "008 mm. bilocular, the locules united by medial 

 tube. 



Hab. on bark of trees and bushes, sterile. Launceston. 



, 4. T. parietinus, L., yellow, sub-orbicular, membranaceous, 

 rotundato lobate, incised, lobes sub -imbricate, appressed, plane 

 or sub-concave, smooth, margin crenate, thickened and up- 

 turned, under sui^face paler or whitish. Apothecia con- 

 colorous or waxy orange, margin entire. Spores "01 to "016 

 x -007 to -009 mm. 



Hab. on trees and rocks. Gunn, St. Patrick's, Oldfteld, 

 Cheshunt, Archer, Hook. Fl. Tasm.; Hmpe.; Krplh.; Brown's 

 Eiver, Hobart, Falmouth, Launceston, Mount Wellington; 

 and Cornelian Bay and Bellerive, Bastow\ Derweut River, 

 Wey7nouth. 



