/ Ic/i/if /'(■(!' /)/' Xor/li Aiiirrici/. S3 



1. B. trilobata 11 Gr. Stems creeping, dichotonious- 

 proliferous; leaves inibricate, obliquely ovate, antrorsely gib- 

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

 teeth entire; amphigastria subrotund-quadrangular, spreading 

 the upper margin 4-6-tootlied, the teeth subdenticulate; inner 

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

 mouth tridentate. (Jioigcrmaiiia triJohata L., PJeuroschisniK 

 frilohatNiii Dnmort. ,Masflf/(>hri/iim fy'tlohatum Nees). A variety 

 is Ma)^ti(i<)l)fiiiiiu fn'(h'iif/cN/<ifiiiii Lindenb., (Juncjermania tri- 

 dentkulata Michx.) 



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

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



Bih.—^yn. Hep. p. 2.S0 ; Hep. Kurop. p. 103. 



Ddin.—Y^YXi. Jung. t. 76 ; Ekart, t. Ill, f. 22 ; Sulliv. Mosses U. S., t. 

 VIII. 



Ecsic— 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. (Jioigermania defiexa., Mart., 

 Pleuroschisma deflexum Dumort., Mastigohryum deflexum Nees. 

 Includes Masf/c/obri/nm fDnbir/innn Lindenb., and M. denuda- 

 finii Torrey MS. ) 



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

 Bib— ^yn. Hep. p. 231 ; Hep. Europ. p. 104. 

 D^-Zm.— Ekart, t. XII, f. 98. 

 Exaic. — Hep. Bor.-Amer. No. 80. 



XVTI. LEPIDOZIA Nees. 



Sporogonium terminal on sliort brunches 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. Gapsule globose, 4-valved at the base. Ela- 

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



