366 BRYACE^. [Hypnum. 



104. H. turfaceum, Lindb. Monoecious : j^lants small, ces- 

 pitulose, bright green, yellowish spotted ; stems prostrate, with 

 short subpinnate or fasciculate branches ; leaves depressed, flat, 

 the laterals preading horizontally, the upper and lower alter- 

 nately inclined to the left and to the right, ovate-lanceolate, long- 

 acuminate from an ovate-oblong base, sharply serrate to the 

 middle, ecostate ; areolation fusiform or broadly linear, distinctly 

 quadrate or oblong, equilateral at base ; perichoetial leaves ovate, 

 concave at base, abruj^tly short-cuspidate and dentate upward : 

 capsule subcernuous and subinclined, oblong-cylindrical, costate 

 and constricted under the orifice when dry; operculum broadly 

 conical, blunt at the apex; peristome normal, with two strong 

 cilia nearly as long as the entire segments ; annulus double, large. 

 — Fries, Bot. Notis. 1857, 142, and Fl. Dan. Suj^pl. t. 117. 

 Stereodon turfaceus^ Mitt. Plagiothecium turfaceum^ Lindb. 

 Faun. Flor, Fenn. ix. 33 ; Sulliv. Icon. Muse. Suppl. 87, t, 65. 

 Isopterygmm turfaceum^ Lindb. 



Hab. On the ground and decayed trunks; Alleghany and Wliite 

 Mountains {James)-, New Jersey {AusUn)\ Fort Colville {Lyall). 



105. H. elegans, Hook. Dioecious: plants small, pale 

 green, shining when dry; stem depressed, with few unequal 

 branches ; stem-leaves erect-spreading, plane and distichous, 

 narrowly ovate, more or less long-acuminate, concave, short, 

 bicostate at base, slightly serrulate at the apex ; cells narrower 

 than in the last, pellucid, but scarcely enlarged at base ; peri- 

 cha^tial leaves lanceolate-acuminate ; capsule horizontal or sub- 

 pendent by an apical curve of the pedicel, oblong, slightly 

 inflated at the curved neck, constricted under the widened 

 orifice when dry ; operculum conical, obtuse or short-rostellate ; 

 teeth broadly lanceolate, blunt at the apex ; segments entire ; 

 cilia three, slender, as long as the segments ; annulus simple. — 

 Muse. Exot. t. 9 ; Schwaegr. Suppl. iii. t. 282. Plagiothecium 

 elegans^ Schimp. Coroll. 116 : Sulliv. Icon, Muse. Suppl. 86, t. 64. 

 Phyncliostegiuni elegans, Lindb. in Iledwigia, ii. 79, and Faun. 

 Flor. Fenn. ix. 47. Isopterygiwn elegans, Lindb. 



Var. terrestre. Dark green ; branches shorter, slightlj'^ 

 decurved at the apex. — Lindb. 1. c, as Bhynchostegium ; Aust. 

 Muse. Appal., n. 349. 



Har. Crevices of shaded rocks; Vancouver Island (Menzies); White 

 Mountains {James); Northern New Jersey, sterile. The variety on the 

 ground in a ravine near Paskack, New Jersey (Austin), sterile. 



