150 HANDBOOK OF BRITISH HEPATIC®. 



Exs No. 185. Jungermannia bidentata, Raddi. 

 Etrusc. t. IV., fig. 6. 



On mountain rocks. — (Plate j, fig. 4.6.) (Fr. 

 April.) 



Leaves with the teeth longer than in L. biden- 

 tata, more acute and straight. There has been some 

 uncertainty about L. Hookcriana. Gottsche says 

 that : " Hooker's figure of L. bidentata (t. 30, f. 7) 

 shows a deeply divided involucral leaf, each lobe 

 bidentate, which I have never seen in British or 

 German examples, and which must be of rare 

 occurrence, or depend on some mistake. Our 

 German forms have the segments of the involucral 

 leaves either entire, merely elongated cauline leaves, 

 or they have a small tooth on one side, and the 

 adjacent stipule is quadrifid." It was probably a 

 mere local variety of L. bidentata, and not the above 

 species. 



Lophocolea spicata, Tayl. 



Stem branched ; leaves horizontal, ovate, 

 apex two or many toothed ; perichaetial leaves 

 many toothed ; stipules free, bifid, dentate at 

 the base, fruit terminal ; perainth prismatic, 

 naked ; mouth torn and toothed ; perichaetial 

 leaves two-toothed, serrate. 



Lophocolea spicata, Tayl., in Nees Syu. Hep. 

 167; Cooke Hep. fig. 113 ; Carr. and Pears. 

 Exs. No. 263. 



Amongst mosses. 



