TTi/pmim.] BEYACE^. 403 



Bubincurvecl, arcuate wlien dry, soft, brown ; teeth pale yellow, 

 tliin ; segments entire; cilia two or three, slender, fragile; 

 annulus none. — Muse. Frond, iv. 97, t. 37; Bryol. Eur. t. 615. 

 Amhlijstegium. cordifoKum, DeNot. Briol. Ital. 136. 



Hab. Prairie svvamps, bogs, meadows, streams, and borders of lalies; 

 rare in fruit. 



174. H. giganteum, Schimp. Dioecious: much like the 

 last, from which it differs in its much larger size, the stem thick 

 and densely pinnately ramulose, the leaves larger and more 

 solid, the areolation more dense and vermicular, broader and 

 quadrate at the angles, and the inflorescence dioecious. — Syn. 

 64'2. 11. cordifolium^ var. stenodyction, Bruch & Schimp. 1. c. 

 Ambli/stegiuni giganteimi, DeNot. 1. c. 135. Stereodon gigaii- 

 teiis, Mitt. 1. c. 



Hab. Reported from Pennsylvania (Jrtmes); AVisconsin (Lapliam)', 

 cedar swamps, New York {Austin); Canada (Macoun); Fort Colville 

 (Lyall). 



All the specimens examined are sterile, rather referable as a variety to 

 H. hnmifollum or II. adnncum. Mitten remarks that this is the moss 

 distributed by Uriunmond (n. 209) as //. cordlfollum, and that all Ameri- 

 can specimens are more slender than the European. 



175. H. sarmentosum, Wahl. Dioecious: tufts dense, 

 variegated or dark purple, mixed with young green stolons ; 

 stems without radicles, long, more or less densely ramulose ; 

 branchlets tmequal, acute : leaves open, loosely imbricate when 

 dry, ]iurple and straw-color, glossy, green only when young, 

 elliptical, long-ovate, obtuse and cucullate at the apex, apiculate 

 or not, concave ; costa simple, vanishing below the apex ; areo- 

 lation very narrow and solid, abruptly enlarged, inflated and 

 hyaline at the concave subdecurrent angles; perichstial leaves 

 pale, narrowly costate, the inner subsheatliing, obsoletely sulcate, 

 nerved : capsule cernuous or horizontally incurved, ovate-oblong, 

 turgid, arcuate Avhen dry ; teeth bright yellow ; cilia two or 

 three, stout, as long as the entire segments ; annulus none. — 

 Fl. Lapp. 380 ; Bryol. Eur. t. 616. Amhlystegium sarmentoswn^ 

 DeNot. I. c. 



Hab. Peat bogs of New England (Oalcea). 



176. H. cuspidatum, Linn. Dioecious : tufts loose, yel- 

 lowish or dii'ty green ; stems Avith few branches, pinnately 

 ramulose, rigid and cusi)idate at the apex by the convolute 

 leaves : leaves crowded, erect, open, broadly ovate-oblong. 



