EVANS : HEPATIC^E COLLECTED IN SOUTHERN PATAGONIA. 55 







the base 53/^x29/1,; bracts of innermost row 1.5 mm. x 0.95 mm. and 

 1.7 mm. x 1.35 mm., perianth 4 mm. long, 1.2 mm. wide. 



Villarino Bay. 



Plagiochila ansata is a species of wide distribution in southern regions, 

 having been reported also from the Falkland Islands and from New Zea- 

 land. The type specimens from the first of these localities agree closely 

 with the Fuegian plants ; but, as the published descriptions and figures 

 of the species are somewhat inadequate, it has seemed advisable to de- 

 scribe and figure it anew. The description given above is drawn from 

 robust stems, particularly those bearing perianths ; sterile stems and the 

 branches and innovations of fertile plants are sometimes much more 

 slender and bear scattered and smaller leaves. Even in the most slender 

 forms, however, the characteristic leaf-cells with their well-developed tri- 

 gones are retained. Judging from the description, the specimens doubt- 

 fully referred by Bescherelle and Massalongo to Plagiochila circinalis be- 

 long here. Herr Stephani has kindly sent me a specimen of the last- 

 named species from Australia ; and, although it is certainly a near ally of 

 P. ansata, it differs from it in the following points : the plants are more 

 robust, the leaves are densely imbricated and their antical margins spread 

 out from the stem and are strongly revolute throughout nearly their whole 

 length, the leaf-cells are scarcely, if at all, elongated at the base, their tri- 

 gones are even more conspicuous, they are oval or circular in outline and 

 are very frequently confluent. 



45. PLAGIOCHILA BISPINOSA Lindenb. Ann. Sci. Nat. IV. 8: 326. pi. 



ii. f. 7-13. 1858. 

 Villarino Bay. (W. Magellan, Savatier.) 



46. PLAGIOCHILA DURICAULIS Hook. f. & Tayl. in G. L. & N. Syn. 



Hep. 641. 1847. 

 Jungermannia duricaidis Hook. f. & Tayl. Lond. Jour. Bot. 3 : 458. 



1844. 

 Fuegia. (W. Magellan, Savatier.) 



47. PORELLA FCETENS (De Not.) Trevis. Mem. reale 1st. Lomb. di Sci. 



e Lett. III. 4: 407. 1877. 



Madotheca fattens De Not. Mem. Ace. Tor. II. 16: 23 \.f. 77. 1855. 

 Villarino Bay. 



