72 IJJIuoi>t Sfafr LaJtordforij of Xntural Ilisforij. 



12. L. Isete-fusca Aust. Stems creeping, 1 — 1.7 cm. 

 long; leaves fuscous more or less imbricate, very broadly fal- 

 cate-ovate, patent, slightly convex, obtuse, with 2 — 3 much en- 

 larged cells in the centre next the basal row, the lobe minute, 

 subovate; amphigastria small, orbicular, the lacinise erect, 

 somewhat acute; sporogony phase unknown. 



JIab.—iio. States? (SuUivant). 



Bib. — Bot. Bulletin (now Bot. Gazette) I, 36. 



13. L. Ravenelii Aust. Stems short, flexuous, convex 

 above; leaves yellowish^ imbricate, obdeltoid-orbicular, strongly 

 convex, the lobe minute, subinflated; amphigastria minute, 

 rotund, bilobed, the lobes obtuse; areolation of leaves large, 

 opaque; sporogony phase unknown, 



Hab. — Bark of trees, S. C. (Ravenel). 



Bib — Bot. Bulletin (now Bot. Gazette) I, 35. 



*** Amphigastria obsolete or wanting. 



14. L. minutissima Dumort. Stems capillary, flex- 

 uous, sparingly branched; leaves small, approximate, vertical, 

 subrotund, imperfectly 2-lobed, the lower lobe an indistinct 

 fold; amphigastria obsolete; inner involucre terminal on a 

 rather long branch, broadly obovate, compressed, 5-angled, the 

 mouth obtuse, papillose. ( L. ulichia Tayl., Jungermania 

 minutissima Sm.) 



Hob. — Roots of trees, Ala. (Eu.) 



Bih.—^yn. Hep. p. 387, 767; Hep. Europ. p. 19. 



Delin. — Brit. Jung. t. 52. 



15. L. echinata Tayl. MS. Stems loosely branching, 

 minute, the whole plant scarcely visible to the unaided eye: 

 leaves ovate, acuminate, cellular-echinate and denticulate, fal- 

 cate-decurved, sinuate-complicate at the base; amphigastria 

 obsolete; inner involucre on a very short lateral branch, pyri- 

 form-clavate, acutely 5-angular, the margin echinate-muricate; 

 involucral leaves bifid, the laciniaj entire. (L. calcarea Libert, 

 Jungermania hamatifoUa var. echinata Hook.) 



Hub. — Rocks and roots of trees; rather common. (Eu.) 

 5ift.— Syn. Hep. p. 344 (sub. L. calcarea;) Hep. Europ. p. 19. 

 Delin. — Brit. Jung. t. 51. 

 ^rcsic— Muse. AUeghan. No. 275 ;Hep. Bor.-Amer. No. 99. 



