454 39. JUNGERMANNIA TllILOBATA [CL. XXIV. 



Roth, Germ. 3. 195. Smith, Fl Brit. 3. 1248. Turn, 



Muse. Hibern. 41. Hedw> Sp. PL 114. Bridel Museol, 



2. 133. Sehwdgrich. Suppl. 1. 160. 

 Hypnum fontinalioides, Hqfni. Germ. % 79. 

 Fontinalis alpina, Dicks. Fasc. 3. p. 2. t. 4. f. 1, 

 Cinclidotiis fontinalioides, Palis. Beauv. Aethelog. p. 28. 52. 



-HooA-. Mus. Brit. p. 29. t, 11. 



Geogi^aphical Distribution. 



Norway and the north of Scotland seem to be the most 

 northern regions where this moss is found. It extends, so 

 far as I know, only into the south of Germany. But it is 

 not found either in Hungary or in the more southern coun^ 

 tries. 



IV. Musci hepatic i. 

 39. 



Jungermaniiia trilobata, L. 



This beautiful moss grows, early in spring, on stiff clay 

 soils, in our woods. It climbs on the roots and stems of our 

 forest-trees. The stem, which is about five inches high, 

 is dichotomous, branched, every where set with leaves, attaches 

 itself by its tendrils, which spring at considerable distances, 

 and are covered by small scales, to all objects. The leaves 

 are green, but are generally inclined to yellow, stand thick 

 together in two lines, nearly opposite to one another, and ho- 

 rizontal. They arc oblong, almost quadrangular, embrace 

 the stem or branches with their base, have a thick, granular, 

 cellular texture, no nerves, and are provided at their broad 

 extremity with three, more rarely with four distinct teeth ; in 

 other respects they are entire. On the upper surface they 

 are somewhat convex, on the lower a little concave. On the 

 lower surface of the stem are found very small amphigastria^ 

 which are also nearly square, with three larger doubly den- 

 tated teeth, and with their margin somewhat bent. The 



