— I02 — 



broader than high, inner lamellae up to 30, parallel and not connected or 

 irregular and joined by very oblique cross-walls. Basilar membrane of en- 

 dostome extending about ^ up, the segments very narrow and papillose with 

 narrow slits between articulations; cilia 2 or 3, and short or nearly equalling 

 segments in length and more or less appendiculate. One or two rows of 

 transversly elongated cells about mouth of capsule. Seta up to 4 cm. high. 

 Nearly smooth spores up to .024 mm. 



Growing in very damp or wet crevices of rock by springs. July 6, 1888, 

 Missouri River bank below Great Falls. This species is near Muhlenbeckii 

 but differs in the very narrow segments of the endostome with narrow slips 

 between the articulations, not rounded perforations, the leaf-cells also are 

 more elongated above and less regularly short-rectangular below (19). 



Brachythecium veluti7ium intricatujn (Hedw.) Br. & Sch. Columbia 

 Falls, April. Western plants^ undoubtedly average somewhat larger than 

 eastern or ordinary European specimens. I have found the stem leaves of 

 Montana plants up to 2.25 mm. long. Limpricht gives 1.8 mm. for the 

 species but there are two European varieties with large leaves^(up to 2.10 

 mm.) and the common Montana form exactly matches in appearance the 

 variety as given above[(257). 



Brachythecium collinum subjulaceuin Pfeffer. Divide Mt. and Two-Medi- 

 cine Lake, Blackfeet Ind. Reservation. Growing in moister, more shaded 

 places, of larger size with larger, less imbricated leaves (435). 



Hypnum intermedium Lindb. Columbia Falls. Stem sections of this 

 plant show an outer wall of large, thin cells next several rows of thickened 

 cells and a distinct central strand. In appearance it is much like revolvens 

 and Sendtneri (414). 



Hypnum sty riacufnl^'im^v. Belt Mts., Columbia Falls, Forty-mile Cr. 

 and Cut-Bank Cr., Blackfeet Ind. Reservation, 5,000 ft. Aug. Not before 

 credited to North America. It is somewhat like a slender form of the pre- 

 ceding {H. pahistre) with more distant, curved and spreading leaves. The 

 leaves are also rather more pointed, often distinctly serrulate on the margin 

 below, and vein weaker, usually slightly forked above. The flowers are 

 clustered along the stem, often 2 or 3 $ and i $, and the outer perigonial leaves 

 are figured by Limpricht as distinctly 3-toothed ; this character is variable 

 however in authentic specimens received fromj. Breidler, the original collect- 

 or of the species in the Alps of Austia (400). 



Hypnum giganteu?n dendroides Limpr. Plants with lower branches 

 often long, and all the branches with more or less numerous branchlets. 

 The stem leaves are comparatively long and narrow, 3^^ by to 2 mm., in 

 this respect approaching cordifolium, but they have the abruptly inflated 

 ^2,x Q,Q\\soi giganteum. Belt Mts., Columbia Falls (219). 



