HEPATICiE. (LIVERWORTS.) 699 



4. Li. cyclostipa, Tayl. Stems (5"- 7" long) branched; leaves palo 

 green, patent-recurved, oblong, obtuse-; the lower lobe quadrate-ovate, involute, 

 1 -toothed ; amphigastria reniform-rotund ; perianth terminal, obcordate, com- 

 pressed, plane above, ventricose-4-winged beneath, the wings ciliate, the cilia 

 dentate; involucral leaves nearly covering the perianth. — Bark of trees, near 

 Cincinnati, Ohio. 



5. L.. poljpfiaylla, Tayl. Stems caespitose (3"-4" long) ; leaves olive- 

 green, semi-cordate ; lower lobe involute, lanceolate ; amphigastria minute, 

 reniform; perianth immersed, rotund-obovate, 5-6-angled near the apex, the 

 angles dentate-crested. — Habitat same as the last. (We have not seen speci- 

 mens of No. 3 and 5 : the descriptions are from Lond. Jour. Bot., 1846.) 



6. Li. auriciilseta, Hook. & Wils. Grows in dark green patches; stems 

 5" -8" long; leaves closely imbricating, scymitar-shaped, complicate and some- 

 what 2-lobed.at the base; amphigastria obovate-rotund, emarginate; perianth 

 obovate-triangular. — Bark of trees, Louisiana. 



7. L. testlldsiiea, Tayl. Stems 5"- 7" Ion.*; leaves whitish-green, very 

 closely imbricating, patent-divergent, oblong, almost seymitar-shaped, obtuse, 

 complicate-2-lobed at the base ; the lobe small, lanceolate ; amphigastria rotund, 

 minute compared with the leaf. — Bark of trees, Southern Ohio. 



* # Amphigastria 2-cleft, or obsolete. 



8. L. ScrpySlifdlia, Libert. Stems vaguely branched ; leaves with the 

 upper lobe roundish-ovate, convex ; the lower much smaller, obliquely ovate, in- 

 volute; amphigastria rounded, 2-cleft, its segments obtuse; perianth obovate, 

 acutely 5-angled. — On moist rocks and trees, Alleghany Mountains. — A small 

 pale-green species, with transparent and loosely reticulated leaves. (Eu.) 



9. L.. eucullata, Nees. Stems filiform, rather pinnately branched ; 

 leaves oblong-ovate, distant, the lower margin inflexed-hooded ; amphigastria 

 oval, 2-cleft; perianth obovate, rather compressed, obtusely keeled beneath, 

 convex on the back and 2-keeled near the apex. (L. lucens, Tayl.) — Moist 

 rocks, near the ground, Alleghany Mountains. — A minute, flaccid species, with 

 light pea-green foliage. 



10. L. minutiSSinia, Dumort. Stem creeping, sparingly branched ; 

 leaves vertical, subrotund, imperfectly 2-lobed, the lower lobe an indistinct fold ; 

 amphigastria obsolete ; perianth terminal, compressed, 5-anglcd ; the mouth 

 obtuse, papillose. — Roots of trees. — Small as No. 9. (Eu.) 



11. L. ealcarea, Libert. Stems loosely and divaricately branched ; 

 leaves ovate, pointed, decurved, cellulose-echinate, inflexed at the base, saccate ; 

 amphigastria oblong, 2-cleft; perianth pear-shaped, with 5 crested wings. — On 

 roots of trees, Ohio. — A very minute species, scarcely visible to the naked eye. 

 (Eu) 



31. MADOTHECA, Damortier. Tree Scale-Moss. (Tab. 22.) 



Fructification lateral, nearly sessile. Involucral leaves 2 or 4, two-lobed. 

 Perianth ovate, biconvex ; the mouth 2-lipped, incised or entire. Calyptra glo- 

 bose, persistent, rupturing below the apex. Capsule globose. Elaters free, at 



