(36 9 ) 



Milium rostratum Schrad. Columbia Falls, July (303). 



Milium affine Bland. Belt Mts., July (118) ; Columbia 

 Falls, June, a low form apparently humile Milde (430). 



Milium insignc Mitt. Columbia Falls, June, growing with 

 medium and closely related to it. It is distinguished from 

 the latter by the longer, narrower leaves, more decurrent and 

 more distant on the stems, which are free from radicles 

 above (407). 



Mnium serratum Schrad. Belt Mts. ; Columbia Falls, 

 May (70). 



Mnium orthorrhynchum Brid. Macdonald Lake, Aug. 

 (220). A small slender form of dryer places evidently 

 belongs here (373). 



I am unable to find a single good distinction by which M. 

 lycopodiodes can be separated from the preceding which has 

 leaf-cells above about .016 mm. in diameter. 



Mnium umbratile Mitt. Plants with leaf-cells somewhat 

 larger, .020 to .025 mm. in diameter in upper leaf are referred 

 here. Belt Mts. (283). 



Mnium spinulosum Bry. Eur. Belt Mts., July; Columbia 

 Falls, Oct. (106). 



Mnium Blyltii Bry. Eur. Columbia Falls, 5,000 ft., July. 

 This plant has a distinct, colored border, mostly 1 row wide, 

 of elongated cells in the leaf margin, while the upper leaves 

 show a double row of short blunt teeth above. The seta 

 measures up to 5 cm. high. Lid of capsule low-convex, not 

 mamillate. Male plants may be known by the very small 

 leaves just under the perichaetium, which gradually enlarge 

 toward the middle of the stem, then decrease again below (304). 



Mnium punctatum datum Schimp. Columbia Falls, April 

 (69). 



Mnium subglobosum Bry. Eur. North Fork Sun River ; 

 Forty-mile Cr. and Two-medicine Lake, Blackfeet Ind. 

 Reserv. ; Columbia Falls, April (389). 



Mnium nudum R. S. Williams, Bryologist, 3: 6. 1900. 

 Two-medicine Lake and South Fork Cut-bank Cr., Black- 

 feet Ind. Reserv. ; Essex, G. N. Ry., 4,500 ft. (370). 



