Bicknell : Studies in Sisyrinchium 243 



mens are in full flower and appear to differ in no material way 

 from many Pennsylvania examples, having, however, rather long- 

 bracted green spathes and with some of the pedicels more exserted 

 than is usual and longer, 20-27 mm. in length. 



The most northern and western point from which the species 

 has been known hitherto is Port Huron, Michigan (C. K. Dodge). 



Certain imperfect specimens of a Sisyrinchium from northern 

 Minnesota, which I have elsewhere referred to under .S. angusti- 

 folium, if not a distinct species may represent a stoutly developed 

 form of S. mucronatiwi. 



Sisyrinchium septentrionale Bicknell 



Professor Macoun's collection affords a most interesting confir- 

 mation of the validity of this species previously described from 

 only scant material. I am now able to record seven separate col- 

 lections of the plant, giving it a range from western Manitoba 

 north to Saskatchewan and west to British Columbia and Wash- 

 ington : 



Manitoba: west of Fort Ellice, June 29, 1879, flowers and 

 young fruit, wet prairies, Macoun ; east of Pipestone Creek, June 

 26, 1880, flowers and mature fruit, Macoun. 



Assiniboia : Moose Mountain Creek, June 16, 1883, full 

 flower, low ground, Macoun. 



Saskatchewan: E. Bourgeau, 1858, Palliser's Brit. N.Am. 

 Exploring Expedition. 



Alberta: Banff, July 8, 1891, flowers and fruit, village street, 

 Macoun. 



British Columbia: Kicking Horse River, Aug. 13, 1890, 



mature fruit, low gravelly banks, 4000 ft. alt, Jas. M. Macoun. 

 Washington: Wilkes' expedition, 1838-42, Spokane to Col- 



ville. 



The specimens from Idaho elsewhere doubtfully referred here 

 prove to be not this species. 



Professor Macoun writes, u This is certainly a good species and 

 seems to prefer drier situations than any of the others. To be 

 more correct it seems to prefer arid spots where water has lain and 

 dried up. Besides the specimens collected I saw it very fre- 

 auentlv between Wood Mountain and the Rockv Mountains over 



