Ilcpdflccfj of Xorf/t America. 97 



10. O. albescens Dumort. Stems loosely creeping, 

 arcuate, fastigiately brandling; leaves subvertical, orbicular, 

 heuiisplieric-concave, bifid with a short sinus, the segments 

 equal, rather obtuse; involucral leaves uniform, mostly imbri- 

 cate: amphigastria ovate- or oblong-scutiform, obtuse, entire or 

 obtusely l-2-toothe(i at the base; inner involucre oblong, 

 smooth, the mouth contracted, denticulate. (JiDif/eniKoiia 

 aJbescens Hook.) 



Hab.—lW. {Wolf). Greenland (Vahl). (Eu.) 



Bib. — Syn. Hep. p. 102 (sub Jungermania) ; Hep. Europ. p. 89. 



11. 0. nematodes Gottsche. Texture lax ; leaves 

 rather long, distant: amphigastria small, 2-parted, the seg- 

 ments acute, their apices incurved; inner involucre on a short 

 ventral branch. 



Hab. — Banks of ditches and in swamps, Fla., Southern Ga. {Austin). 

 J5*.— Torrey Bull. VI, 302. 



XXVII. COLEOOHILA Dumort, 



Involucre oligophyllous, the leaves connate at the base. 

 Inner involucre terminal, elongate, cylindric, longer than the 

 calyptra, the mouth compressed, bilaljiate. Capsule quadri- 

 valved, coriaceous. Elaters deciduous, bispiral. Leaves entire. 

 Amphigastria present. Name from Gr. koleos, sheath, and 

 cheilo.i, lip, from the form of the inner involucre. 



1. C Taylori Dumort. Stems erect, nearly simple, 

 radiculose; leaves convex, orbicular, entire, with large areolas; 

 amphigastria lanceolate-subulate, entire or subdentate; inner 

 involucre terminal, oval, the mouth compressed, bilabiate; 

 calyptra finally long exserted. (Jinif/t'nnauia TaijJori Hook., 

 Leptoscijphns Taijlori Mitt. ) 



Hab. — On wet rocks, high Mts. of N. Y. and N. Eng. [Sullivant, Aus- 

 tin), Greenland ( Vahl). (Eu.) 



Bib.—Qyn. Hep. p. 82 ; Hep. Europ. p. 106. 



DeZm.— Brit. Jung. t. 57. 



Exdc.—Yie^. Bor.-Amer. No. 24, 25 (?). 



