Hyimuui.] BRYACEiE. 359 



Hab. Clayey shaded ground, New Jersey {Austin)', Pennsylvania 

 (James); New York (Peck). 



88. H. deplanatum, Schimi?. Ms. Dioecious : fertile 



plants small, the sterile larger ; tufts flattened to the ground, 



pale green, or yellowish brown in dry places ; stems with few 



branches, irregularly or subpinnately ramulose, branches and 



branchlets closely adhering to the gTOund by radicles, like the 



primary stems : leaves two-ranked, imbricate, ovate-lanceolate, 



gradually acuminate, thin, concave, serrulate all around, the 



costa short-obsolete or none ; cells linear, fusiform, flexuous, the 



basilar enlarged, similar : capsule oval-oblong, nearly regular, 



cernuous, arched, plicate, constricted under the enlarged orifice 



and turbinate when dry; peristome as in the last species; annu- 



lus none. — Sulliv. Muse. Allegh. n. 50, Mosses of U. States, 



70, and Icon. Muse. 171, t. 108. 



Hab. Dry woods in close thin mats upon clayey ground, stones, or 

 roots of trees ; common, but very rarely fruiting. Male flowers unknown. 



89. H. serrulatum, Hedw. Monoecious : plants widely 

 expanded, pale green ; stems closely creeping, long-branching ; 

 branchlets distant, distichous or subpinnate : leaves two-ranked, 

 thin, flat, very open, ovate-lanceolate, acuminate, serrulate 

 above, thinly costate to above the middle ; areolation loose, 

 long-rhomboidal, similar at the base ; j^erichaetial leaves oblong, 

 scarious, whitish, costate, abruptly acuminate, flexuous at the 

 apex : capsule oblong, long-pedicellate, cernuous, incurved ; lid 

 long-rostrate, conical at base; segments as long as the teeth; 

 cilia two or three, a little shorter ; annulus very large, com- 

 pound. — Spec. Muse. 2.38, t. 60 ; Sulliv. Mosses of U. States, 

 70, and Icon. Muse. 169, t. 107. 



Hab. On the ground in dry woods, in loose thin mats, usually over 

 decayed leaves. Closely allied to //. confertiun, Dicks. 



90. H. rusciforme, Weis. Plants loosely intricate, cespi- 

 tose, pendent or floating, rigid, dark or dirty green ; stems pros- 

 trate ; branches erect, incurved : leaves oj^en, tenacious, nar- 

 rowed at base, ovate, broadly oblong, acuminate, gradually 

 smaller toward the apex of the branches, distinctly serrulate, 

 costate to below the point ; areolation narrowly rhomboidal ; 

 alar cells long-oval or linear, obtuse ; perichgetial leaves ecos- 

 tate, the ujiper half-sheathing, abruptly acuminate : capsule 

 ovate, cernuous or subincurved, with a short distinct neck, solid, 

 constricted under the orifice when dry ; operculum large, solid, 



