Hepaticd' of Xoiih America. S3 



1. B. trilobata B. Gr. Stems creeping^ dichotuiuous- 

 proliferous; leaves imbricate, obliquely ovate, antrorsely gib- 

 bous at the base, the apex rather broad, acutely tridentate^ the 

 teeth entire; amphigastria subrotund-quadraiigular, spreading 

 the upper margin -i-G-toothed, the teeth subdenticulate; inner 

 involucre curved, cylindric, plicate at the narrow apex, the 

 mouth tridentate. (Jiiiiyeniiaiiia friJobata L., PJcuroscltisnui 

 frilobatum Dumort. , Masfigohri/iini frilobatum Nees). A variety 

 is Mastlgobnjutn fridenfirulatum Lindenb., ( Jimgermania tri- 

 denticuJata Michx.) 



Hah. — In ravines, wet woods and swamps; common northward and 

 on the mountains. The variety from X. J. southward. (Eu.) 



Bih.—^yrv. Hep. p. 230 ; Hep. Europ. p. 103. 



De?zn.— Brit. Jung. t. 76; Ekart, t. Ill, f. 22; Sulliv. Mosses U. S., t. 

 VIII. 



Eisic— Hep. Bor.-Amer. No. 77, 78, 79. 



2. B. deflexa B. Gr. Stems narrow, forked or alter- 

 nately branching; leaves strongly deflexed, cordate-ovate or 

 ovate-oblong, falcate, arcuate at the dorsal margin, bi-triden- 

 tate or entire at the narrow apex; amphigastria somewhat 

 approximate, suborbicular-quadrate, the upper margin bifid, 

 crenate or entire; inner involucre cylindric, arcuate, plicate at 

 the apex, the mouth denticulate. (JiDigermania dejiexa^ Mart., 

 PlpHfoschisma dejiexum Dumort., Mastigobryum de/iexum Nees. 

 Includes Masfigobry7im ambignum Lindenb., and M. denuda- 

 finn Torrey MS.) 



Hab. — On rocks in the higher mountains. (Eu.) 

 Bib— Hyn. Hep. p. 231 ; Hep. Europ. p. 104. 

 DeZin.— Ekart, t. XII, f. 98. 

 Exsic. — Hep. Bor.-Amer. No. 80. 



XVII. LEPIDOZIA Nees. 



Sporogonium terminal on short branches arising from the 

 under side of the stem. Inner involucre elongate, obtusely 3- 

 plaited, the mouth denticulate. Involucral leaves small, rather 

 broad, acutely 2-4-lobed at the apex. Calyptra membranous, 

 slender^ included. Capsule globose, 4-valved at the base. Ela- 

 ters bispiral. Antheridia on short, spike-like branches, arising 



