Hi/pnum.] BRYACE^. 365 



Hab. Eocky Mountains (DnanHiOJuZ). The variety on roots of trees 

 near the grouml ; New York (C. II. Peck, Amtin) ; Furt Colville [Lyall). 

 Also a form from Davis Straits ( Taylor), according to Mitten. 



102. H. geminum. Monoecious : branches ascending, inter- 

 laced : leaves ovate or ovate-acuminate, open, variously curved, 

 subsecund or subfalcate, the borders minutely serrulate or entire ; 

 costa thick, ascending to the middle ; cells long and narrow, a 

 few of them shorter at base ; perichoetial leaves erect, the inner 

 broader and longer, short-acuminate : capsule oval-cylindrical, 

 subcrect, gradually narrowed at the neck; segments narroAV ; 

 cilia two, nearly as long. — Stereodon geminus^ Mitt. Journ. 

 Linn. Soc. viii. 39, t. 7, 



ITab. Rocky Momitains, at 6,000 to 8,000 feet altitude; associated with 

 the last (Lyall). 



Somewliat like //. pulchellam, but with leaves more gradi^ally narrowed 

 from a wiJer base, tlie thin but broad nerve continued to the middle, the 

 margins more or less evidently serrulate from the base to the apex, and 

 the cells only half as long and narrower. — {Mitten.) 



103. H. micans, Swartz. Monoecious : plants small, in 

 very loose ilat tufts, whitish yellow or fulvous, shining ; stems 

 prostrate, rooting, irregularly divided into few branches and 

 short branchlets : leaves loose, compressed, the lateral spreading 

 at right angles, thin, soft, ovate-lanceolate, narrowly acuminate, 

 obscurely serrulate above ; costa basilar, geminate, indistinct ; 

 cells narrowly linear, those of the angles few, quadrate-oblong; 

 inner j^erichretial leaves more or less abruptly acuminate, coarsely 

 serrate at the base of the point : capsule very small, ovate-oblong, 

 slightly incurved on a slender comparatively long pedicel; lid 

 conical, short-acuminate or mamillate ; segments nearly entire, 

 as long as the teeth; cilia one or two, short, nodose.. — Muhl. 

 Cat. 104, and Adnot. Bot. 175, according to authentic specimens 

 in Muhl. Herb, examined by SuUivant and reported upon by 

 letter to James and Austin. //. alhulum, Muell. Syn. ii. 280; 

 Sulliv. Mosses of U. States, 71, and Icon. Muse. 179, t. 112. 

 II. teneritm^ Hook. & Wils. in Drumm. Muse. Amer. (Coll. II.), 

 n. 108, 109. 



Var. fiilvum. Larger ; branches long, flattened, sometimes 

 floating, fulvous or dark brown when old. — Il.fulvum., Hook. 

 & Wils. in Drumm. 1. c., n. 110 ; Sulliv. 1. c. 80, and Icon. Muse. 

 205, t. 125. 



Hab. On much decayed wood in moist places; the variety in bogs; 

 Southern States. 



