196 * The Ottawa Naturalist [January 



Apparentlv rare in Canada, all our specimens havint;- been, 

 collected between Ottawa and Gait, Ont. 



MuHLENBERGiA Mexicana, (Linn.) Trin. subsp. commutata, 

 Scrib. Rhodora, IX, 18. 



M. Mexicana, Macoun, Cat. Can. Plants, II, 194 in part. 



Lemmas awned; awns 4-10 mm. long. Otherwise as in the 

 species. Our specimens range from Ottawa to Pelee Poi.it, 

 Lake Erie. 



Muhlenbergia foliosa, Trin. 



M. Mexicana, Macoun, Cat. Can. Plants, II, 194 in part. 



M. sylvatica, Macoun, Cat. Can. Plants, II, 195 in part. 



CuliTLS branched above rarely to the base, branches elon- 

 gated; panicles narrowly lanceolate to filiform, long-exserted, 

 densely flowered, more or less interrupted especially towards 

 the base. A ver}^ common species from New Brunswick west 

 to Winnipeg. 



Muhlenbergia foliosa, Trin., var. ambigua (Torr.) Scribn. 

 Rhodora IX, 20. 



Lemmas awned; awns 4-10 mm. long. Otherwise as in the 

 species. Owen Sound, Out., No. 26,244. {John Macoun). Gait, 

 Ont. {W. Her riot). 



Muhlenbergia racemosa, (Michx.) B. S. P. 



M. glomerata, Trin.; Macoun, Cat. Can. Plants, II, 194 



and 391. 

 From Newfoundland to British Columbia. 



Sporobolus filiformis, (Thurb.) Scribn. 



Growing at the edge of a little pool where water dripped 

 over rocks at the S.E. end of Chilliwack Lake, B.C., alt. 3,500 ft. 

 No. 26,430 (/. M. Macoun). New to Canada. 



LuzuLA Piperi, (Coville). Con. U.S, Nat. Herb. XI, 185. 



Growing in dense clumps on gravelly "snow-slides" at 7.000 

 feet altitude on the first summit west of the Skagit River, B.C. 

 No. 70,307. (J. M. Macoun). New to Canada. 



Habenaria stricta, (Lindl.) Rvdb., Bull. Torr. Bot. Club, 

 XXIV, 189. 

 H. gracilis, Macoun, Cat. Can. Plants, II, 15. 

 All the localities cited for this species by Prof. Macoun are on 



