( i53 ) 



lateral nerves on each side very obscure, acute in side view, 

 oblong-lanceolate and about 0.8 mm. wide ; palet faintly 

 2-nerved, strongly hispidulous, usually about equalling the 

 scale; stamens 3, oblong-linear, about 2 mm. long; stigmas 

 2, plumose. 



Type collected by R. S. Williams on mountain side at 

 Dawson, July 14, 1899. Also obtained at Cumberland 

 House, on the Saskatchewan River, in the Lake Winnipeg 

 region, and communicated to Torrey by Hooker, and bear- 

 ing the number 105. Resembling A. arundinacea (Trin.) 

 Beal in the bracts at the base, but it is a taller and much 

 rougher plant with a more contracted panicle and smaller 

 spikelets. 



Agrostis hyemalis (Walt.) B.S.P. Dawson, August 13 

 and 23, 1899 (Williams), referred for the present to this 

 complex species. 



Calamagrostis atropurpurea Nash, sp. nov. 



A tall perennial with a rather stout long rootstock and deep 

 purple contracted panicle. Culms 8-12 dm. tall, erect, 

 smooth, or a little roughened just below the panicle : leaves 

 about 5 ; sheaths striate, somewhat roughened, especially to- 

 ward the apex, rather loosely embracing the culm ; ligule 

 scarious, about 5 mm. long ; blades erect, flat, strongly rough- 

 ened, long-acuminate, 1-2 dm. long, 3-5 mm. wide: panicle 

 contracted, about 1 dm. long, its branches and their divisions 

 extremely hispidulous, erect, the larger ones 2-4 cm. long, not 

 spikelet-bearing below: spikelets numerous, 3.5 mm. long, 

 lanceolate, acute ; empty scales strongly strigose, deep 

 purple, acuminate, rounded on the back, the first scale 1- 

 nerved, equalling or slightly longer than the 3-nerved second ; 

 flowering scale about 2.8 mm. long, usually deep purple at the 

 base, 5-nerved, the nerves converging above and indistinctly 

 excurrent, the strongly hispidulous rather stout awn inserted 

 about the middle and extending to or considerably beyond the 

 apex of the scale ; callus-hairs rather copious, in two lateral 

 tufts, generally a little exceeding the scale ; rudiment about 

 0.5 mm. long, its hairs extending to the apex of the scale ; 

 palet about two-thirds as long as the scale. 



On wooded hillsides, Dawson, July 14, 1899 (R. S. 

 Williams). Related to C. Scribncri Beal, but the much 



