222 TASMANIAN HEPATICiE. 



1. P. ciRCiNALis, Lehn ; Fl. Antarct. i., 348. Stems 



tufted, erect, branching, stout, l-3in. high, olive brown. 

 Leaves closely imbricate, erecto-patent, obliquely cor- 

 date, concave, quite entire or minutely toothed ; margins 

 recurved, dorsal gibbous ; involucral similar, but large. 

 Perianth obconic, compressed ; mouth entire or slightly 

 toothed. — Syn. Hep. 53, 652. P. kemicardia, FL 

 Antarct. 148, t. 63, f. 2. Syn. Hep., 627. 



Tasmania — Labillardiere. New South Wales ; New 

 Zealand.) 



2. P. FASCicuLATA, Liiidbg. Stems ascending, dichotomous 



below, fastigiately branched above. Leaves obliquely 

 orbicular-oblong, convex ; ventral margin and apex 

 unequally toothed. Perianth lateral and on the forks, 

 long exserted, obovate ; mouth compressed, obliquely 

 truncate, ciliate. Syn. Hep., 27. Fl. Tasm., ii., 224. 

 P. ColensoL? — Tayl. in London Jour. Bot., 1846, 

 269. (PI. iv,, fig. 1, 2, 3.) 



The specimens marked P. aculeata, in Herb. 

 Hooker are precisely the common state of P. fasci- 

 culata ; but amongst the specimens distributed under 

 the name of P. aculeata some have been found to 

 belong to P. Stephensoniana, a species not yet found 

 in Tasmania. P. uncialis belongs to the same group. 

 In Crypt. Antarct. the teeth on ventral side are too 

 numerous, and the dorsal margin is not commonly 

 toothed. 



St. Patrick's River — Gunn. South Huon— -Oldfield, 

 Archer. Near Hobart — R. A. B. 



3. P. MiCRODiCTYUM, Mitten, in Fl. N.Z., ii., 131, t. 94, f. 6. 



Stems 2-3in. high, slender, sparingly branched ; branches 

 with incurved tips. Leaves green, spreading, closely 

 imbricate, deltoid'-ovate, the angles rounded; dorsal 

 margin quite entire, ventral sometimes slightly toothed ; 

 involucral a little toothed ; perianth oblong, compressed, 

 lips ciliate-toothed. (PI. iv.) 



St. Crispin's Well, Mt. Wellington, R. A. B. (New 

 Zealand.) 



4. P. Magellanica, Lindenherg. Sp. Hep., p. 164. P. 



Lindenbergiana, Lehm. in Linn., iv., p. 367. P. 

 Sphalera,^ Hook f. and Tayl. Fl. Antarct., p. 121. P. 

 iinciformis, Syn. Hep., p. 653. 



The Tasmanian species of this genus are larger than 

 any of those collected at Cape Horn, and have all their 

 leaves entire ; in every other respect they correspond so 

 nearly that they may be supposed to be one entire leaved 



