EVANS : HEPATIC/E COLLECTED IN SOUTHERN PATAGONIA. 49 



3O. LOPHOCOLEA HORIZONTALS (Hook.). 



Jungermannia horizontalis Hook. Muse. Exot. //. 96. 1818. 

 Chiloscyplms horizontalis Nees in G. L. & N. Syn. Hep. 177. 1845. 

 Jungermannia grandifolia Hook. f. & Tayl. Lond. Jour. Bot. 3: 474. 



1844. 



Chiloscyphus grandifolius Tayl. in G. L. & N. Syn. Hep. 185. 1845. 

 Villarino Bay. 



31. LOPHOCOLEA LENTA (Hook. f. & Tayl.) Tayl. in G. L. & N. Syn. 



Hep. 162. 1845. 



Jitngermaniiia lenta Hook. f. & Tayl. Lond. Jour. Bot. 3: 379. 1844. 

 Jnngennaunia diademata Hook. f. & Tayl. /. c. 3: 560. 1844. 

 Jungermannia secundifolia Hook. f. & Tayl. /. c. 3: 471. 1844. 

 Lapataia. 



32. LOPHOCOLEA OBVOLUTA (Hook. f. & Tayl.). 



Jungermannia obvoluta Hook. f. & Tayl. Lond. Jour. Bot. 4: 80. 1845. 



Fuegia. 



In the original description of this species no station is given except the 

 Falkland Islands. In the Flora Antarctica, Hermite Island, Cape Horn, 

 is also mentioned. Under the name Jungermannia obvoluta, two plants 

 are preserved in the Taylor herbarium ; the first of these from the Falk- 

 land Islands, must be considered the type of the species ; the second from 

 Cape Horn, is apparently distinct, but there is so little of it that it would 

 be unwise to attempt to describe it. In the type-specimen a well-devel- 

 oped leaf is almost longitudinally inserted and is attached by a very broad 

 base, the distance from side to side being about twice as great as that 

 from base to apex. The leaf is more or less distinctly divided into two 

 unequal lobes ; the postical, which is slightly the larger, is concave and 

 rounded at the base and extends beyond the stem, at the apex it is biden- 

 tate but is otherwise entire ; the antical lobe is decurrent and is irregularly 

 lobed and dentate. The leaf-cells average 25 yLt in diameter. The speci- 

 mens collected on the Albatross expedition and referred by the writer to 

 L. obvolutceformis^ agree closely with this type. In Mr. Hatcher's speci- 

 mens the postical lobe is more coarsely and irregularly dentate than in 

 the type and the leaf-cells are a little smaller, averaging 21 JJL in diameter, 

 but the plants are otherwise so similar that they can hardly be separated. 



'Contr. U. S. Nat. Herb. I : 140. 1892. 



