Hijpnum.] BRYACE^. 407 



short, obsolete ; areolation very narrow, a little enlarged at the 

 base and angles ; perichaitial leaves sharply acuminate, deeply 

 silicate, with a very slender pale costa : capsule incurved, cer- 

 nuous or arcuate, oblong-cylindrical, becoming much arched, 

 plicate and constricted under the orifice when dry ; lid convex- 

 conical, acute ; peristome perfect ; cilia two or three, nearly as 

 long as the slightly perforated segments ; annulus very large, 

 trij)le. — Spec. PL 1127; Bryol, Eur. t. 612. AmUystegium 

 scorpioides, Lindb. 1, e. 



Hab, Cranberry marshes, Northern Ohio (Lesquereux); Canada 

 {ilacoun). 



Subgenus XXVII. PLEUROZIUM. 



Plants increasing by annual arcuate branches or by erect 

 rigid innovations, fasciculate, pinnate and bipinnately ramulose. 

 Stem-leaves larQ;er than those of the branches and different in 

 shape ; paraplr\-llia numerous, large, ])luripartite. 



185. H. splendens, Hedw. Tufts loose, rigid, pale olive 

 green; jilants solid, the old ones many times arcuate ; branch- 

 lets long, filiform : basilar leaves distant, small and squamiform, 

 the upper lai-ger, loosely imbricate, broadly oblong-ovate, nar- 

 rowed into a long flexuous point, obsoletely bicostate, plano- 

 concave, serrulate ; branch-leaves smaller, oval-oblong, shorter- 

 j)ointed ; inner ])erichaetial leaves narrowly acuminate, suberect 

 or recurved at the apex : calyptra large, long-i)ersistent : cap- 

 sule turgid-ovate ; operculum large, rostrate. — Spec. Muse. 262, 

 t. 67, II. proliferum, Linn. Spec. PI. 1125. ILjloconmim, 

 splendens, Bruch & Schimp. Bryol. Eur. t. 487. Hylocomium 

 proliferum, Lindb. Muse. Scand. 37. 



Var. comp actum. Stems comj)act, prostrate, with short 

 branches and filiform or attenuated branchlets : stem-leaves 

 short-pointed. 



Hab. Deep pine woods, in mountains or northward; very common. 

 The variety near Forteau, Labrador (J. A. Allen). 



186. H. umbratuna, Ehrh. Tufts loose, dark or blackish 

 green, rigid ; plants irregularly bipinnate ; branclilets close, 

 subfasciculate, unequal, arcuate to one side ; stems fragile, 

 covered with paraphyllia : stem-leaves long, decurrent at base, 

 broadly obcordate, abruptly lanceolate-acuminate, with a long 

 double costa, deej^ly sulcate, serrate all around, with a few 



