342 BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



■455. Brachythecium acuminatum sub-albicnns R. & C. — Facies of 

 B albicans: more robust, pale yellow: branches silky, julaceous: areola- 

 tion denser, cells narrower. Bot. Gaz. 15:60.1890. — Louisiana; Florida. 



456. Bracliythecium cyrtophyllum Kindb. — Sub-species of B. acumi- 

 natuin: habit of a small form of /?. albicans: plants cespitose, green, 

 faintly glossy: stems irregularly divided, not creeping; branchlets fili- 

 form, sub-obtuse: leaves small, close, loosely appressed when dry, open-erect 

 when moist, ovate-acute or short-acuminate, not sulcate nor decurrent, 

 serrulate at least above middle; areolation loose, upper cells narrowly 

 rhomboidal, inner sub-linear, alar sub-quadrate somewhat numerous and 

 chlorophyllose; costa stout, reaching to %; perichagtial leaves ecostate: 

 dioicous. Mac. Cat. 191. — On elm logs in thick woods: Ontario. 



457. Bracliythecium Roellii Ren. & Card. — Dirty or yellowish green: 

 stems soft, depressed, scarcely radiculose, subpinnate; branches elongate, 

 flexuous: leaves ovate-lanceolate, decurrent, quite long and narrowly 

 acuminate, faintly plicate; margin sinuate or denticulate, plane in middle, 

 revolute at base and at acumen; costa reaching beyond middle to % 

 length; cells narrow, elongate, linear, alar cells few sub-quadrate: evidently 

 dioicous. Hedwigia 32: 263. 1893. — Vancouver. 



458. Brachythecium glareosum Sch. — Related to B. salebrosum: 

 stems decumbent, often very long, 15-20 cm., forming large yellow tufts, 

 softer, shining: leaves more erect, longer acuminate; cells narrower, those 

 of angles oblong: dioicous: capsule oblique or sub-horizontal; lid conic, 

 longer. Husnot, Muse. Gall. 324. — On earth at roots of trees: Revelstoke, 

 B. C. 



459. Brachytheciuitt albicans oceirtentale Ren. & Card. — Stems de- 

 pressed, laxly foliate: leaves svibsecund, less long acuminate, sometimes 

 very distinctly denticulate. Hedwigia 32: 258. 1893. — Washington; Mon- 

 tana. 



4(>0. Brachythecium harpidioides C. M. & Kindb. — Tufts compact, 

 soft, radiculose below, whitish or bright green, not shining: stems intri- 

 cate, irregularly branching or pinnate: leaves spreading, somewhat loosely 

 disposed, decurrent, more or less arcuate, not auricled, plicate, nearly flat, 

 ovate, subulate acuminate; borders faintly denticulate, recurved often all 

 around; cells distinctly chlorophyllose, alar large sub-quadrate, others 

 lanceolate: dioicous: capsules not found. Mac. Cat. 194. — On old logs in 

 woods: Revelstoke, B. C; New Brunswick. 



481. Bracylithecium salebrosum Waghornei R. & C. — Monoicous: 

 tufts very dense: stems erect, turgid, not radiculose: leaves more crowded, 

 imbricate: lid mamillate. Differs from B. marnilligerum Kindb. in leaves 

 imbricate, not patulous when dry: stems not radiculose. Bot. Gaz. 19: 

 238. 1894. Battle Harbor, Labrador. 



