(376) 



Hypnum uncinatum Hedw. Belt Mts., Columbia Falls, 



July (77). 



Hyj>num uncinatum symmetricum Ren. & Card. Colum- 

 bia Falls, June (405). 



Hypnum Sendlneri Schimp. Columbia Falls. This may 

 be distinguished from intermedium by stem section, which 

 show no distinct outer row of large, thin cells in the wall. 

 It has a distinct central strand (290). 



Hypnum capillifolium Warnst. Columbia Falls, in still 

 water of old river channel (262). What I take to be a finely 

 developed sterile form grows on muddy bottoms in still water 



Hypnum Knciffii laxum Schimp. South Fork of Two- 

 medicine River (436). 



Hypnum poly carpon Bland. Columbia Falls, in water of 

 swamp, June 18 (175)' 



Hypnum polycarpon tenue (Schimp.) Limpr. Columbia 

 Falls (437). 



Hypnum decipiens (De Not.) Limpr. Columbia Falls 

 (411). 



Hypnum falcatuni Brid. Columbia Falls, South Fork 

 Cut-bank Cr., July (352). 



Hypnum crista-castrensis L. Belt Mts., Sept. ; Columbia 

 Falls (89). 



Hypnum reptile Michx. Columbia Falls, on decayed logs, 



July (399)- 



Hypnum subimponens Lesq. Macdonald Lake, Columbia 



Falls, June (351). 



Hypnum Vauchcri Lesq. Belt River and Tenderfoot Cr., 



Belt Mts., Great Falls, July. This species seems to fruit not 



uncommonly in Montana. The sporophyte has not before 



been described, I believe. The pedicel is up to 15 mm. high, 



capsule short-cylindric, about 2 )/, mm. long with lid, slightly 



curved and erect or nodding. Lid acute, its height about 



equalling basal diameter. Annulus broad, 2 or 3 rows of 



cells high. Two or 3 smooth cilia between segments. Spores 



slightly rough, up to .016 mm. (72). 



