48 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



A. Spragg: Bridger Canon, June 26, 1899; Lower Basin of the Gal- 

 latin, July 8, 1898; Highwood Canon, June 22, 1888, R. S. Williams, 

 802; Columbia Falls, May 27, 1893, R. S. Williams. 



Saliv SitcJicnsis, Rydberg, Flora, 472. In the splitting of this 

 species all the Montana specimens referred to it come under 5". 

 bclla, Piper. 



Salix subcaerulea, Piper, Bull. Torr. Bot. Club, 27:400. (W. W. 

 Rowlee). This seems to be the extreme range of the species east- 

 ward bringing it nearly to the Continental Divide. 



Columbia Falls, June, 24, 1894, R. S. Williams; same June 5, 1893. 



Sali.r vcstita, Rydberg, Flora, 112, and all other authors, as to the 

 species of the Rocky Mountains, is 6\ Fcrnaldii above. 



Salix Wolfii, Bebb. -(W. ( W. Rowlee). 

 Near Cold Spring, Teton Co., July 16, 1897, R. S. Williams. 



CLPULIFER;E. 



Betula occidentalis, Hook. See Fernald, Am. Jour. Sri. 14: 

 167-194. If the brown-barked canoe birch of the Northwest; be 

 separaU'-l from the white-barked B. papyrifcra. Marsh., as suggested 

 by several recent botanists, then this must bear the name of B. 

 occidentalis, Hook, and the small tree common in the mountain 

 Ci-iH.ns of the slate hitherto bearing that narro will b- 'K-IO.VU as 

 B. microphylla, Bunge, (B fontinalis, Sargent). B. occidentalis > 

 Hook, is not infrequent in the forests at Columbia Falls, Belton, 

 White Pine and other localities in the western part of the state 

 and though they look very different and are distinguished by the 

 lumbermen, it is not yet certain that the two species are distinct. 



Quercus macrocarpa depressa, Engelm. "Scrub Oak". Sar- 

 gent (loth Census. 9: 140) says, "West to the eastern foothills of 

 the Rocky Mountains of Montana", but no specimens seem to have 

 been collected in the state and diligent search down the Missouri 

 and Yellowstone to Ft. Buford has failed to reveal it. It certainly 

 occurs on the Little Missouri in Xorth Dakota and it probably is 

 found on that stream as it crosses the extreme southeastern corner of 

 the state, as has been reported by various parties acquainted with 

 that section. It should be looked for in the coulee thickets back 

 from that river. 



