116 The Ottawa Naturalist. [Oct. -Nov. 



of Mr. J. M. Macoun the writer has had an opportunity to study 

 an excellent lot of about a hundred specimens of this species, 

 which were collected in the vicinity of Banff, Alberta, by Mr. 

 N. B. Sanson, in July of 1906. Several mounted specimens 

 were also found by the writer along with other material of the 

 genus kindly sent to him for examination from the herbarium 

 of the Canadian Geological Survey. The entire series of speci- 

 mens at hand shows naturally a greater range of variation than 

 the limited material on which the species was founded; never- 

 theless the essential characters ascribed originally to the species 

 are retained throughout, and the following additional data 

 may be recorded: Stems 1-3 dm. high, lowermost leaves ovate 

 to slightly obovate 1-4 cm. long, 1-2.5 cm. broad; ray-flowers 

 10-14; disk-flowers 50-60. In addition to Miss Farr's specimen, 

 cited in the original publication of the species, the following 

 collections well represent the species. Alberta: damp places, 

 Red Deer, H. H. Gaetz, coll. of 1895, (hb. Geol. Surv. Canada, 

 no. 11622); in grass along Bragg's Creek, Elbow River, 26 June, 

 1897, /. M. Macoun (hb. Geol. Surv. Canada, no. 22784); cross- 

 ing of McLeod's River, 19 June, 1898, W. Spreadborough (hb. 

 Geol. Surv. Canada, no. 19725); Devil's Head Lake, alt. 1385 m., 

 13 July, 1899, N. B. Sanson (hb. Geol. Surv. Canada, no. 22125); 

 vicinity of Banff, July, 1906, N. B. Sanson (hb. Geol. Surv. 

 Canada, without number; hb. Field Museum, cat. no. 288350); 

 Crows Nest Lake, 9 July, 1883, Dr. G. M. Dawson (hb. Geol. 

 Surv. Canada, no. 14800 in part); Banff, 28 June, 1905, Miss 

 Edith M. Farr (hb. Field Museum, cat. no. 189412); Sulphur 

 Springs, Banff, alt., 1415 m., 11 June, 1906, F. K. Butters and 

 C. O. Rosendahl, no. 1324 (hb. Field Museum, cat. no. 276752). 

 Senecio Balsamitae Muhl. in Willd. Sp. PI. 3: 1998, 1800. 

 A very interesting suite of specimens collected by Mr E. Wilson 

 in the Kamloops District, British Columbia, July, 1906, nos. 

 686, 672 (hb. Geol. Surv. Canada) are indistinguishable from 

 eastern forms of this species secured by Professor M. L. Fernald 

 on the Gaspe - Peninsula, Province of Quebec, in 1904. 



Senecio Balsamitae Muhl., var. thomsoniensis, var. nov. 



Herbaceus perennis ; caulibus erectis simplicibus 3-4 . 5 dm. 

 altis floccoso-tomentosis ; foliis inferioribus petiolatis oblongo- 

 oblanciolatis 3-7 cm. longis 5-12 mm. latis obtusis crenato- 

 serratis juventate utrinque floccoso-tomentosis plus minusve 

 glabratis, foliis superioribus petiolatis vel sessilibus usque ad 

 10 cm. longis pinnato-lobatis, lobis remotis; inflorescentiis 

 tomentosis; capitulis radiatis per anthesem 6-8 mm. altis. 

 British Columbia: in grassy thickets fifty miles up North 

 Thompson River, 16 June, 1889, /. M. Macoun (hb. Geol. 



