170 TASMANIAN LICHENS. 



Hab. on rocks and trunks of trees, Gunn, Hook. Fl. Tasm., 

 where is is marked doubtful as above, and a note is added 

 that there was but a single specimen, and that in bad con- 

 dition. 



9, Pakmelia, Ach. Njl. 



Tb alius lobate or laciniate, expanded, sometimes shining, 

 medulla stuppeoas. Apothecia scattered. Spores 8, ellip- 

 soid, simple, small. Spermatia acicular, fusiformi iucrassu- 

 late at the acute apices. 



1. P. perlata, L., albo glaucescent or whitish, dilated, lobed, 

 lobes rotundate, sub-imbricate, often albo sorediate on the 

 margins, under surface fuscous black or black, and pale 

 towards margin. Medulla K yellow C — . Apothecia badio 

 rufous, margin entire. Spores -Oil to -017 x '007 to -01 

 mm. 



Hab. (various collectors) Hook. Fl. Tasm. ; Hook. L. J. 

 Bot. ; Hmpe. ; Krplh. ; Tasman Peninsula, Weymouth. Often 

 confounded with the following species, which is much more 

 common, and is readily distinguishable by the rimulose upper 

 surface, seen with a lens, and by the perforated apothecia, 

 and especially by the chemical reaction. 



2. P. perforata^ Wulf., whitish or glaucous white, lobate or 

 lobato sinuate or sinuato divided, smooth, minutely reticulato 

 rimulose, margin often albo sorediate, under surface fuscous 

 black or black. Medulla K yellow, then red. Apothecia. 

 badio rufescent, or fusco rufous, often medio perforate, margin 

 entire. 



Hab. Brown's Eiver, St. Mary's Pass, Launceston, Mount 

 Arthur ; Knocklofty, Bastoiu ; Circular Head, Weymouth. 



3. P. fenm'rima, Tayl., = P. sulcata of Taylor = P. saxatilis 

 of Babington and Hampe, glauco cinereous or glauco palles- 

 cent or whitish, usually glaucous or virescent in growth, 

 rigescent, somewhat shining, laciniate, laciniae sub-pinnatifid, 

 sinuate, concave, apices crenate and crenato divided, upper 

 surface here and there scrobiculato impressed, and — especially 

 towards the apices — marked with white, small rugulosities, 

 underneath black, fibrillose. Medulla K yellow, then red. 

 Apothecia elevated, at length appressed, incurved, rufo 

 castancous, or rufescent, or fusco rufous, sometimes 1 inch 

 broad, at length splitting into lobes. Receptacle reticulato 

 scrobiculate. 



Hab. on trees and rocks, Derwent Eiver, Brown, Or. ; 

 Launceston, Gu7in, Hooker, Hook. Fl. Tasm. ; Hook. L. J. 

 Bot, ; Hmpe. ; Nyl. ; Brown's River, Mount Wellington, St. 

 Mary's Pass, Launceston, Mount Arthur; Tasman Peninsula, 

 Weymouth ; Knocklofty, Bastow, 



