278 NEW HEPATICiE. 



Hab. On rotten wood, North America. J. Drummond, Hook. 

 Herb. 



Tufts scarcely exceeding a line in height, the older and 

 inferior parts olive brown, the younger and upper glaucous 

 green. Shoots crowded, erect, parallel. Easily distinguished 

 from Jung, bicuspidata, L. by the more tufted growth, the 

 erect shoots, and by the erect sheathing bases of the leaves, 

 whose structure is more minutely cellular. 

 15. 3. reclusa, Tayl. ; caule repente, implexo, subpinnato; 

 foliis secundis, approximatis, semiverticalibus, rotundato- 

 quadratis, bifidis, perichaetialibus majoribus, erectis ; calyce 

 ramulum proprium terminante, cylindraceo-ovato, acumi- 

 nata, subtrigono, ore denticulato ; capsula ovata. 

 Jung, reclusa, Tayl. Annals and Magazine of Nat. Hist. Aug. 

 1843, p. 88. J. bicuspidata, a. y, ericetorum, Syn. Hepat. 

 p. 140. 

 Hab. On mural clay banks; south of Ireland; very com- 

 mon. 



Tufts shallow, superficial, of great extent, olive brown, with 

 scattered whitish calyces rising above their level. Stems 

 filiform. Leaves minute, not exceeding in size those ot 

 Jung, byssacea, Roth. No stipules. The eminent editors of 

 the "Synopsis Hepaticarum" consider this species merely 

 a variety of J. bicuspidata, L. It differs by the smaller size, 

 by the shorter leaves, which are more opaque and more con- 

 cave, with a sinus which is shallower and more rounded, the 

 leaves too, are more crowded, are secund, are rotundato- 

 ovate, their cells are more minute, while they are separated 

 from each other by larger vessels ; the perichcetium is shorter 

 and its leaves less acuminated ; the colour of the plant is 

 darker, when fresh of an olive green ; the growth is more 

 tufted; the gemma are smooth, never angular, and are 

 situated on a cluster of leaves, and never on a naked capi- 

 tulus. But the shape of the capsule is very decisive ; i n 

 both it is an ellipsoid ; but in J. bicuspidata, L., the trans- 

 verse diameter is to the conjugate as 12 to 5, while the ratio 

 in J. reclusa, is as 8 to 5. 



