140 A MANUAL OF MOSSES 



McKean : Bennett Brook, on decaying log, Decem- 



ber 2, 1894, and at Quintuple, fune 15, 

 1896. D. A. B. 



2. WEBERA Hedwig. 



(Pohlia Hedwig). 



Mostly paroicons or dioicous : paraphyses mostly present 

 and filiform : robust to weak, gregarious or cespitose : stem 

 mostly red ; leaves more or less tufted on the fertile shoots, 

 linear-lanceolate to lanceolate, non-bordered, towards apex 

 more or less toothed; costa mostly incomplete; cells narrowly 

 rhomboid-hexagonal to linear, the basal slightly more lax : 

 seta long, slender, tortuous and twisted, at apex hooked or 

 curved; capsule cernnous or pendulous, rarely erect, with short 

 collum, obovate to oblanceolate or long-clavate : annulus 

 mostly biseriate ; peristome inserted near the mouth ; teeth 

 yellowish, papillose, with border narrow or none ; segments 

 mostly about as long, rarely rudimentary, often with a low 

 basal membrane, often narrow, usually split but not fenestrate, 

 cilia non-appendiculate, often rudimentary or lacking ; spores 

 mostly small ; operculum convex-conic, umbonate or apiculate. 



A world-wide genus of about 140 species, inhabiting soil, 

 rocks, and decaying . wood. Forty-six species in North 

 America; at least 5 species in our range. 



Key to the Species. 



a. Leaf-cells very narrow, inner peristome with a low basal mem- 

 brane, complete narrow segments, and cilia often rudimentary or 

 none. b. 



a. Leaf-cells narrow: basal membrane comprising one-third to one- 

 half the height of the inner peristome; segments split, cilia well 

 developed. c. 



b. Paroicous; capsule long and slender with a long slender collum. 



i. W . elongata. 

 b. Polyoicous: capsule oblong to pyriform with a rather short 



collum. 2. IV. cntdo. 



c. Paroicous; not bearing gemmae: costa hardly reaching the serrate 



apex. d. 



c. Dioicous; often bearing gemmae: costa incomplete or percurrent 



e. 

 d. Cilia two, not sub-appendiculate. articulate. 



3. W . initaus. 

 d. Cilia three, distinctly sub-appendiculate. 



30. W. nntctjis var. tri- 



ciliota. 

 e. Costa not reaching apex: capsule small and very short: stem net 



reddish. 4. W . Icscuriana. 



e, Costa percurrent: capsule larger and not so relatively short; ^*cm 

 reddish. f. 



f. Gemmae ovoid, obtuse or with short and not twisted points. 



5. W. annotina. 



f. Gemmae long, narrow, with acuminate and often twisted points. 



6. W. proligera. 



