48 GEOLOGICAL AND NATURAL HISTORY STTRVEY OF CANADA. 



(ITe.) D. obtusifolius, Schimp. ; Lesq. & James, Mosses of N. 

 America, 114. 



Didymodon oblongifolium, (n. sp.) Drumm. Muse. Bor.-Am., No. 114. 

 D. latifolium, Drumm. Muse. Bor.-Am., No. 115. 



Mountain-rocks ; often on the under side of projecting ledges and 

 moist marshy places, Eocky Mountains. (JDrummond.') 



(HY.) D. subtorquescens, C. M. & Kindb. (n. sp.) 

 D. latifolius, Canadian Musoi, No. 69, in part. 



Nearly allied to B. atrovirens, Smith, (B. nervosus, Bruch & Schimp. 

 and Lesq. & James), but the tufts are compact, the stem higher, (about 

 1 cm.), the leaves green, not dingy, very short, suboval or subspathu- 

 late, smaller, less opaque, the costa neither excurreht nor broader 

 above, the capsule cylindric. 



The description of D. nervosus by Lesq. & James corresponds nearly 

 to our species, but not to the true European. 



On earth on exposed cliffs along the Gasp^ coast above the Madeline 

 Eiver, 10th August, 1882. (Macoun.) 



(178.) 'D. cernuus, Bruch & Schimp. ; Lesq. & James, Mosses of 

 N. America, 114 ; Canadian Musci, No. 11. 



On earth, South West Point, Anticosti ; on earth at Campbellton, 

 N.B. ; on rocks and cliffs along the G-asp^ coast ; on earth along the 

 Pembina Eiver, northwest of Edmonton, N.W.T. ; CSche Creek Moun- 

 tain, and on wet rocks in a ravine at Kamloops, B.C. (^Macoun.) 

 Greenland. (Fl. Gr.) 



Var. xanthopus, Kindb. (n. var.) 



Leaves less chlorophyllose, costa virescent. Capsule larger ; teeth 

 more united ; pedicel yellow. 



On black earth at the crossing of Boggy Creek on the " Old Trail " 

 leading to Touchwood Hills, Manitoba, 12th August, 1872. {Macmm.') 



(179.) D. camptothecius, Kindb. (n. sp.) 



Habit of Besmatodon cernuus. Plants densely csespitose. Leaves 

 long, narrow-lingulate, subobtuse, entire or obscurely crenulate, faintly 

 papillose, marginate and at the base revolute, mucronate by the excur- 

 rent greenish costa. Capsule cylindric, arcuate : teeth short, cut in 

 2 or 4 partly coherent segments ; annulus indistinct ; lid with a shoi-t 



