300 A MANUAL OF MOSSES 



tritihts about as long, widely carinately gaping, yelld\V-ish, tiie 

 three slender, nodose cilia about as long, the basatl membrane 

 kbout two-fifths as high as the teeth; lid rostrate; exothecial 

 cells brownish, rather thin-walled, rectangular to hexagonal, 

 Several rows at the rim much smaller ; spores smooth, medium- 

 walled, .0i0-.014 mm., rtiature ih spiring. 



On stones and logs in rich and moist mountain woods; 

 Eurbpe, Asia, northern Africa, and in North Anierica from the 

 Arctic regions south to the northern United States. Not un- 

 common in our region. 



Blair : T. C. Porter. (Porter's Catalogue). 



Elk : McAiirin. (Portfer's Catalogue). 



Jefferson : Kate Stoy. 



McKean : On logs and on ground over leaves, Ruth- 



erford Run, April 25, 1893, West Branch 

 Swamp, oh logs, October 15, 1893, and 

 on rich, shaded bank over leaves, Marilla 

 Brook, Jtine 30, 1895. (Figured), all Brad- 

 ford. D. A. B. 

 Washington : Linn and Simohton. (Porter's Catalogue). 



2. Hylocomium uihbratum [Ehrhart] Bryologia Europjea. 



{Hypntun umhraium Ehrhart). 



(Plate XLIV) 



Slender, not so large and not complanately btaiiched as in 

 H. spieHdenSj more erect and forming loose, grfceh tufts often 12 

 Or 15 cm. high, sometimes yellowish, sortieWhat IhstrbUs: sterns 

 rigid, pinnately or bi-pinnately branched, the brarichlets un- 

 equal, often drooping, sometimes distinctly flagelliforrn, the 

 stems reddish, bearing numerous conspicuous and branched 

 paraphyllia ; stem-leat^es quite broadly triangular-ovate, rather 

 distaht, rather spreading, about 2 mm. lohg, acute to Idttg- 

 acuminate, decurrent, strongly plicate, uiidulately strongly 

 dentate all around, the teeth sometimes recurved, no- papillae 

 on back of leaf; branch-leaves more ovate and smaller; costa 

 double and strong, reaching to about mid-leaf; inedian leaf- 

 cells about 8-10:1, linear, not forming distinct auricles, the ex- 

 treme basal castaiieous-incrassate, rounded; perichsetial leaves 

 broad, apically spreading: seta slender, 3-4 cm. long, flexuous; 

 capsule short, about 2:1, turgid-ovate, more or less horizontally 

 inclined, someVirhat plicate and constricted below the rtiolith 

 vlfhen dry and empty; peristome normally hypnoid, segments 

 carinately split, the cilia usually 2, about as long as seghients ; 

 annuliis none ; lid conic, shortly apiculate ; spores mature ih 

 early spring. 



Over rocks, logs, and woods-humus, in mountain woods ; 

 Europe, Asia, and, in North America, from Newfoundland to 



