•251 



California: W. H. Brewer, no. 1714, 1863; Kellogg & Har- 

 ford, no. 211, 1868-9. 



Washington: W. H. Suksdorf, 1885. 



Yelloivstone National Park : T. H. Burglehaus, 1893. 



Rocky Mountains of British America: Dawson, nos. 7471, 

 7870, 18734, 1430, 1881; J. MacoLin, no. 10474. 1895. 



Spiraea densiflora Nutt; T. & G. Fl. N. Am. i: 414. 1 840. Under 



vS. betulaefolia. 



S. chamaedrifolia /5 Hook. & Arn. Bot. Beechy, 123. 1841. 



S. betulaefolia rosea in herb., not (jray. 



This seems to be well distinct from S. lucida, which is common 

 in the same region. The latter grows mostly in open places, 

 while S. densiflora is found only in the deeper woods. Bridger 

 Mountains, Flodman, no. 543, and Little Belt Mountains, no. 

 544. The following specimens also are in the Columbia Her- 

 barium: Nuttall (type) Rocky Mountains of Columbia; Beechey's 

 Voyage, Kotzebue's Sound ; J. M. Macoun, British Columbia, 

 1890. 



Hedysarum sulphurescens. 



H.flavescens Coulter & Fisher, Bot. Gaz. 18: 300- 1893. Not 

 Kegel & Schmalh. 



This was collected by J. H. Flodman in 1896 in the Spanish 

 Basin, no. 650, and in the Bridger Mountains, no. 651, and by 

 the author in 1895 near Bozeman, no. 2720. 



Trifolium Haydenii Porter in Hayden's Surv. 1871: 480. 1871. 



This was referred to T. Kiugn by Watson, but has nothing to 

 do with it. It is rather common in certain localities of central 

 and southwestern Montana. Flodman, no. 623, from the Bridger 

 Mountains, and no. 624, from the Spanish Peaks ; Frank Tweedy. 

 Park Co., Montana, 1887, and in the Yellowstone Nat. Park, 1884. 

 Also collected by the author and T. A. Williams in the Spanish 

 Basin. 



Vaccinium microphyllum (Hook.) 



V. Myrtillus var. microphyllum Hook. Fl. Bor. Am. 2: 33. 



1834. 



In my opinion this is just as good a species as any, differmg from 



