Moore — On Irish Hepaticcp.. 623 



2. Batzania triangularis, Schleicli. Stems small, decumbent, fragile. 



Leaves incubous, ovoid, convex, tri-crenate at the narrow apex. 



Amphigastria roundisb-ovate, broader than the stem, and notched 



at the apex. 

 Jungermannia triangularis, Schleich. PI. Crypt. Helv. 2, n. 61. J. 



tricrenata, Wahlenb. Fl. Crypt, p. 364; Lindenb. Synop. Hepat. p. 



43 ; Ekart, Syn. Jung. p. 49, t. 12, fig. 99 ; De JN'otar. Prim. 



Hepat. Ital. p. 20. J. deflexa. Mart. Fl. Crypt. Erlang. p. 135, t. 3, 



fig. 8. Bazzania trilobata, var. /?. minor, B. Gr. in Gray's Arrang. 



Br. PI. 1, p. 704. Pleuroschisma deflexum, Dumort. Syll. Jung. 



p. 71, et Hepat. Europ. p. 105. 

 Hab. Bushy places and woods. Frequent about Tore Mountain, 



Cromagloun, and other places near Killarney, Dr. Carrington. 



0' Sullivan's cascade, and Brandon Mountain, Kerry. Glenbower 



wood, near Fermoy, Isaac Carroll, Esq. Glenarrif, Co. Leitrim. 



On the high limestone range of Benbulben, Co. Sligo, not un- 

 file quent. 



Odontoschisma, Dumortier. 



Jungermannia, Dicks. Fasc. PI. Crypt. Brit. 1, p. 6, tab. 1, fig. 10 

 (1785); Hooker, Brit. Jung. (1816). Martinellia, sect, h, B. Gr. in 

 Gray's Arr. Brit. PI. 1, p. 693 (1821). Odontoschisma, Dum. Ee- 

 cueil, 1, p. 19, n. 25 (1835). Sphagnocetis, Nees, in G. L. et IST. 

 Synop. Hepat. p. 148 (1845). Gyninanthe, Mitten, in Jour. Linn. 

 Soc. 7, p. 166 (1863). 



Involucre polyphyllous, bracts in several rows, imbricated, bilobed. 

 Colesule cylindrical, cleft at one side, denticulate at the mouth, 

 originating from the under side of the branch, and shortly pedun- 

 culate. 



1. Odontoschisma sphagni {J)\ck.^.),J)\nn.oT:t\er. Dioecious. Stem ascend- 



ing singly or in small patches among mosses. Leaves close, succu- 

 bous, orbicular, secund. Amphigastria small, lanceolate, and only 

 on the young shoots. Colesule terminal, upon a short proper 

 branch, originating from the ventral side of the stem, oblong, 

 wider in the middle, the mouth denticulate. 



Jungermannia sphagni, Dicks. Fasc. PI. Crypt. Brit. 1, p. 6; Engl. 

 Bot. t. 2470 ; Hook. Brit. Jung. t. 33 ; Lindenb. Synop. Hep. p. 

 28 ; Taylor, in Fl. Hib. 2, p. 58. Odontoschisma sphagni, 

 Dumort. Eev. Jung. p. 19, et Hepat. Europ. p. 108. Sphagno- 

 cetis communis, jSTees, in G. L. et IST. Synop. Hepat. p. 148; 

 Eabenhor. Hep. Europ. exsic. n. 300-566, 440. 



Hab. In bogs among Sphagnum. Frequent in most parts of Ireland, 

 but more abundant in the south than elsewhere. 



2. Odontoschisma denudatum (Nees), Dumort. Dioecious. Stem pro- 



cumbent, branched, branches with flagellge, ascending and leafless 

 near the points, tipped with gonidiferous gemmae. Leaves small 



R. I. A. rROC. — VOL. II., SEn. II., SCIENCE. 3 



