174 TASMANIAN LICHENS. 



18. P. physodes, L., whifcish, sub-stellate, lacinise multifid, 

 plane, glabrous, smooth imbricate, under surface naked, 

 Tiagose, fuscous black, apices inflated and badio pullescent, 

 Thai. K yellow, C +, Med. K — C — . Aj^othecia spadiceous 

 or badio rufescent, margin entire. Spores 006 to "008 x '005 

 to -006 mm. 



Hab. Hook. L. J. Bot.; Hmpe.; Krplh.; Mount Wellington, 

 Mount Arthur ; Blue Tier, Siinson ; Tasman Peninsula, Wey- 

 mouth ; Knockloftj and Cascades, Bastow. 



Var. 1. vittata, Ach., laciniae narrow and linear, denigrate 

 at the margin. 



Hab. Brown's E-iver, Mount Arthur. 



F lugubris, Pers.,=:/'. enter oviorpha, T2ij\.,:= P. physodes, var* 

 e7iteroinorpJia of Babington, generally rugulose, with narrow 

 laciniee spread out to a span or more. 



Hab. Brown, Cr.; Gunn, Archer, Hook. Fl. Tasm.; Hook. 

 L. J. Bot.; Mount Wellington. 



Var. 2. ejicausta, Sw., albido cinerascent, nearly fuscescent, 

 narrowly laciniate, unequal, laciniae multifid, convex or terete, 

 imbricato decumbent or depressed, under surface nigrescent, 

 opaque. Apothecia badio rufous, margin crenulate. Spores 

 •007 to -01 X -005 to -008 mm. 



Hab. Mount Wellington. 



19. P. placorhodmdes,^j\.,=P. co7iferia, Tayl., similar to 

 physodes, but with thallus growing together as though mono- 

 phyllo orbicular, thinly membranaceous, margin crenate or 

 taciniato incised, beneath nigricant, but paler at edge or 

 wholly albid. Apothecia much elevated, liver coloured or 

 liver reddish, 4 to 8 mm. wide, crowded at centre of thallus. 

 Spores -008 to -01 x -005 to '006 mm. Polymorphus, some- 

 times rugulose, etc., etc. 



Hab., very common on trees and logs. Oldfield, Hook. Fl, 

 Tasm. ; Hook. L. J. Bot.; Nyl.; Huon, Brown's Eiver, Mount 

 Wellington, St. Mary's Pass, Launceston, Mount Arthur, 

 Ulverstone ; Tasman Peninsula, and Hobart, Weymouth. 



20. P. imoidata, Nyl., whitish or white, narrowly laciniate, 

 laciniae dichotomous, linear, \\ to 2^ mm. broad, closely rugu- 

 loso unequal, sub-opaque, under surface black, somewhat 

 shining, plicato corrugate, and towards apices badious or 

 even dealbate. Apothecia pallido badious, 4 to 9 mm. broad, 

 receptacle rugulose, elevated, base sub-podicellate, margin 

 entire. Spores "008 to '009 x '006 to '007 mm. 



Hab. on bark of trees. Verreaux,'^^\.\ Derwent ^iyqx, Brown, 

 Cr.; Krplh.; Brown's Eiver, Mount Wellington. 



F. pulverata, Nyl., laciniae somewhat broader, densely and 

 minutely greyish-white pulverulent. Sterile. 



