io6 Wyoming Experiment Station. 



Crataegus Douglasii, Lindl. Bot. Reg. 21, t, (1810). 



Very scarce, only a few specimens observed in one locality. 

 These are not typical, yet can hardly belong to the following species 

 though approaching it more closely than any other. 



Casper, July 25, 1894 (No. 606). Haiuthorn. 

 Cratsegus rivularis, Nutt. T. & G. Fl. i, 464 (1840). 



Of rather frequent occurrence on some streams. 



Gros Ventre River August 22, 1894 (No. 1066). 

 Amelanchier alnifolia, Nutt. Journ. Acad. Phila. viii, 22 (183i). 



Very common in the foothills and along streams. 



Telephone Canon, June 2, 1894 (No. 117). 

 Amelanchier pumila, Nutt. Roem. Syn. Monog. iii, 145. 



Prof. E. L. Greene, of Catholic University, Washington, D. C, 

 writes me that in 1893 I sent him some material as A. alnifolia, 

 which, on e.xamination, proves to be the long suppressed A. /«- 

 wz7a of which he writes as follows: "It may be recognized by its 

 being perfectly glabrous; by having much longer and narrower 

 petals and by having its leaves serrate almost from base to apex, 

 whereas A. alnifolia has its leaves serrate only from the middle 

 upwards." 



. On exammation of the material in our herbarium I find that our 

 1893 material answers to this description of A. puiiiila perfectly. 



Laramie Hills, May 1893. Service Berry. 



SAXIFRAGACE^. 



Saxifraga 'broncliialis, L. Sp. PI. i, 400 (1753). 



Teton Mountains, at high elevations, August 21, 1894 (No. 976). 

 Saxifraga Jamesii, Torr. Ann. Lye. N. Y. ii, 204. 



This rare species was observed but once. Jackson's Hole, 

 August 22, 1894 (No. 971). 

 Saxifraga integrifolia, Hook. Fl. Bor. Am. i, 249 (1834). 



Grassy places in the mountains, but not at all common. 

 Bald Mountain, August 16, 1892, B. C. Buffum; Union Pass, 

 August 10, 1894 (No. 930). 

 Saxifraga nivalis, L. Sp. PI. i, 401 (1753). 



This species is not strictly alpine if this idea be represented solely 

 by altitude. Common, and blossoming in May at 7,000 ft. , and 

 successively throughout the season at higher and higher altitudes. 



