Orthothecium.] BKYACE^. 315 



t. 58. ILjpnuni Ituthenicum, Weinm. Bull. Soc. Mosc. xviii. 



2. 485. 

 Hab. Sitka (Blschoff). 



127. ORTHOTHECIUM, Bmch & Schimp. 

 Plants either small, prostrate and diversely branching and 

 ramulose, or large and fastigiately ramose with few branches 

 and branchlets. Leaves 8-ranked, close, subsecund or erect- 

 spreading, more or less densely imbricate when dry, long- 

 lanceolate, narrowly acuminate, very entire, ecostate; peri- 

 chaetium loosely vaginate. Flowers dioecious. Calyi3tra very 

 small, fugacious. Capsule long-jiedicellate, suberect, oval or 

 oblong, straight or slightly incurved. Operculum short-rostrate 

 from a convex base. Teeth of the peristome narrowly lanceo- 

 late, subulate, yellowish, hyaline, distantly articulate ; segments 

 linear, narrow, as long as or longer than the teeth ; intermediate 

 cilia short or none. Annulus large. 



1. O. rufescens, Bruch & Schimp. Plants tall, in soft 

 irregular reddish yellow tufts ; stems with dichotomous branches 

 and few branchlets : leaves erect-open and subsecund, lanceolate, 

 long and narrowly acuminate, sulcate : capsule yellowish brown ; 

 membrane and intermediate cilia short. — Bryol. Eur. t. 469. 

 Hypnum rxifescens^ Dicks. Crypt. Fasc. iii. 9, t. 8. Leskea 

 ru/escetis, Schwaegr. Suppl. i. 2. 178, t. 86. Stereodon rufes- 

 cens, Mitten, Journ. Linn. Soc. viii. 40. 



Hab. Wet rocks, Davis Strait {Taylor). 



Although No. 221 of Drummond is reported to be this species, we can- 

 not find in four sets of his collection a specimen agreeing with Schimper's 

 description of the European form. All appear referable to 0. chryseum. 



2. O. rubellum. Branches erect, with few branchlets: leaves 

 ovate, concave, with a flexuous apex, revolute on the borders, 

 very shortly bicostate; cells long, the alar indistinct; perichaetial 

 leaves ovate-lanceolate. — Stereodon ruhellus, Mitten, 1. c. 



Hab. Davis Straits (Taylor). Also in the Rocky Mountains (Drum- 

 mond), according to Mitten, mixed with Catoscopium nigritum (n. 53). 



A small moss, with the habit, appearance, and color of O. intricatiim, 

 Bruch & Schimp., but differing in its almost exactly ovate leaves, with a 

 short sometimes discolored apicnlus, the margins revolute, and the areo- 

 lation composed of cells which are twice as wide. — (Mitten.) 



