24 HANDBOOK OF BRITISH HEPATIC^. 



bicular, convex, entire ; auricle hood-like, 

 rather rounded, contiguous with the stem, in- 

 volucral bifid, with the segments entire; sti- 

 pules ovate, bifid, with the margins plane. 

 Perianth ovate, tuberculate. 



Jungermannia dilatata, Linn. Sp. 1600; 

 Hook. Br. Jung., No. 5. Jubula dilatata, 

 Dum. Syll. Jung., 36, t. 1, f. 5. Lejeunia dila- 

 tata, Corda in Sturm., 19, t. 12. Frullania 

 dilatata, Dumort. Rev. Jung., p. 13 ; Gott. 

 and Rabh. Exs. No. 54, 156; Carr. and Pears. 

 Exs., No 47 ; Cooke Hep. f. 157. 



Common on trunks of trees (Fr. Winter) ; 

 growing in dense purplish-brown patches. 



Stems about f inch long, creeping, 

 and branched. Leaves in two opposite 

 rows, distant below, and overlapping in 

 the upper portion of the plant so as to 

 conceal the stem, roundish, with 

 a small lobe or auricle at the base, 

 x 9- applied with its face to the leaf- 

 stipules, notched at the apex. Calyx reversely 

 heart-shaped, with a projecting angle on the under- 

 side ; the whole surface covered with minute fleshy 

 tubercles ; mouth greatly contracted. Capsule 

 globose yellowish brown. — {Plate 1, fig. 1.) 



Fig. 19, with the lobule imperfect, but more 

 accurate on Plate 1. 



