Jungermannia.] HEPATIC^. 61 



minal, on short proper branches ; calyx oblong, subplicate, 

 the mouth dentate. Dicks. Cr. Fasc. 2, t. 5, f. 7. Hook. Br. 

 Jung. t. 16. 



On decaying timber, in woods ; not uncommon. This has a re- 

 markable perichaitium. The colour is whitish and red. 



* * * Leaves tri-quadrifid ; the segments equal. 



32. J. capitata, Hook. Stem prostrate ; leaves roundato- 

 quadrate, the lower bifid, the upper capitato-imbricate at the 

 top and tri-quadrifid; calyx terminal, oblongo-ovate, subplicate, 

 the mouth contracted, toothed. Hook. Br. Jung. t. 80. 



On dry mountain rocks, near Bantry, Miss Hutchins. 



33. J. incisa, Schrader. Stem prostrate; leaves rotundato- 

 quadrate, waved, trifid, the segments unequal, here and there 

 toothed ; fruit terminal ; calyx obovate. Schrad. Samml. 2, 

 p. 5. Hook. Br. Jufig. t. 10. 



On wet banks ; not uncommon. 



34. J. pusilla, Linn. Stem procumbent; leaves large, qua- 

 drate irregularly 2 — 3-fid ; fruit lateral by innovations ; calyx 

 campanulate, the mouth wide, waved, and cut; capsule globose, 

 bursting irregularly. Linn. sp. pi. 1602. Hook. Br. Jung. 

 t. 69. 



On wet clay ; common. In the irregular disruption of the capsule 

 this plant forms an exception to the generic character. It flowers at 

 all seasons of the year in the South of Ireland. The seeds are strongly 

 muricated. 



* * * * Leaves bifid ; the segments unequal, conduplicate. 



35. J. nemorosa, Linn. Stem erect; leaves unequally 

 2-lobed, dentato-ciliate, lobes conduplicate, the lower larger, 

 obovate, the upper subcordate, obtuse ; fruit terminal ; calyx ob- 

 long, incurved, compressed, the mouth truncated, dentato-ciliate. 

 LJnn. sp.pl. p. 1598. Hook. Br. Jung. t. 21. 



In wet situations ; common. This is a most variable species, as to 

 colour, recurvation of the lobes of the leaves, and, above all, as to the 

 degree of serrature of the leaves. 



36. J. undulata, Linn. Stem erect; leaves unequally 

 2-lobed, entire or slightly serrulate, lobes conduplicate, the lower 

 larger obovate, the upper subcordate obtuse ; fruit terminal, 

 calyx oblong, incurved, compressed, the mouth truncated, 

 nearly entire. Linn. sp. pi. p. 1598. Hook. Br. Jung. t. 22. 



In wet situations ; common. Although from Linnaeus and Dillenius 

 down to the present time this has been kept a distinct species from the 

 preceding, I do not see how certain states of it are to be defined and 

 distinguished ; nor can I name them without the assistance of a lens, 

 to tell the serratures of the leaves and calyx. Two and three fertile 

 capsules in the same calyx are not uncommon at Sheen bridge, near 

 Kenmare. 



