Jungermannia.] HEPATICJE. 109 



cmnvolute, fruit terminal and axillary, perianth oblongo-ovate 

 subplicate, tlie month minute denticulated. Hook. Br. Jung. 

 t. 32. E. Bot. t. 2590. Hobs. Br. Mosses, v. 2. n. 89. Lindenb. 

 Syn. Hepat. p. 72. 



Boggy places and in springs, in subalpinc countries. Fr. . — The 



capsules are unknown to me, and the perianths, which are very rare, 

 have been only found by Mr. Lyell in Angusshire, in August. The 

 leaves are peculiarly soft and flaccid, of a dark lurid green, almost black 

 when dry. 



9. J. Spkdgni, Dicks. (Bog-Moss Jungermannia); stem pro- 

 cumbent nearly simple (the gemmiferous elongations alone 

 stipuled), leaves orbicular, fruit terminal on short proper 

 branches, perianth oblong attenuated at each extremity, the 

 mouth contracted denticulate. Dicks. Cr. Fasc. 1. p. 6. t. 1. 



/. 10. E. Bot. t.2470. Hook. Br. Jung. t. 33, and Suppl. t. 2. 

 'Hobs. Br. Mosses, r. 2. n. 110. Lindenb. Sy?i. Hepat. p. 28. 



Moist heathy places. Fr. Spring. — A very elegant and distinct spe- 

 cies, sending out large radicles from nearly the whole length of the 

 underside of its stem, by which it attaches itself to Sphagnum and other 

 mosses. 



10. J. crenuldta, Sm. (crenulated Jungcrmannia); stem pro- 

 cumbent branched, leaves orbicular margined frequently se- 

 (iind, fruit terminal, perianth obovate compressed 4-angled, 

 the mouth much contracted toothed. E. Bot. t. 14G3. Hook. 

 Br. Jung. t. 37. Lindenb. Syn, Hepat. p. 66. 



Moist heaths. Fr. Apr.— Foliage anil perianth frequently tinged 

 with purple. The large cellules at the edge of the leaves that consti- 

 tute the margin which is so remarkable in this plant, are most obser- 

 vable, as Mr. Wilson remarks, in those leaves which are nearest the 

 perianth. 



11. J. gpliarocdrpa, Hook, (round-fruited Jungermannia); 

 -trni ascending simple. Leaves orbicular, fruit terminal, perianth 

 oblongO-OVate contracted and tubular at the mouth at Length 

 4-cleft, capsule (when dry) globose. Hook. Br. Jung. t. 74. 

 Limb nl>. Syn. Hepat. p. 68. 



Bogg} places in the South of England, Wales, and Ireland. FV. May. 

 — According to Mr. Wilson's recent observations, this is a very variable 

 plant; whose perianth becomes Hid or deeply 5-toothed, onlj after the 

 emission of the capsule; and whose capsule seems to assume a Bphserica] 

 form almost in every case after having been dried. 



12. J. hyaUna, Lyell, (transparent Jungermannia); Btems 

 ascending flexuose dichotomous, leave- roundish slightly waved, 

 fruit terminal, perianth oblong angulate, mouth contracted 

 4-toothed. Lyell in Hook, Br, .lung. t. 63. Hook, m E. Bot, 

 Suppl, t. 2678. Lindenb. Syn, Hepat, p. 67. 



Boggy places, New Forest, Hants, and near Ambleside, C, l.jxlL Esq, 

 Lefing Mountain, near Dublin, Dr. Taylor, Fr, Apr.— There is i 

 afliniu between./. i, puwiila, and the present species. 



18, J. eompre'ssa, Hook, (compressed upright Jungcrmannia)} 



item erect branched, leave? orbicular the upper one- renirbrm 



