52 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



1897, R. S. Williams; Mt. Henry, Midvale, 7500 ft., July 16, 1903,. 

 L. M. Umbach, 405. 



Cerastium arvense angustifolium, Fenzl. A form with rigid 

 narrow, fascicled leaves collected by F. A. Spragg, near Lewistown, 

 July 26, 1901, seems best referable here. 



Cerastium arvense oblongifolium, Hollick & Britton, Bull. Torr. 

 Bot. Club, 14 : 47, t. 63. "Montana, Scribner", Syn. Flora, 1 : 230. 



*Cerastium vulgatum, L. A weed common in many places west 

 of the Divide. Kalispell, JuK 21, 1900; Troy, July 25, 1900; Col- 

 i!n;bia Falls, July 20. 1900 Brrax, .A-I^VSI n, 1901 ; Thompson 

 l.fis, August 8, 1901. 



Lychnis montana, Wats. In alpine and subalpine situations. 

 Horsefly Pass, Crazy Mts., 8200 ft., July 20, 1902; Mt. Hyalite, 10,- 

 roo ft., Aug. i, 1902. 



Sagina nivalis, Fries. Found near melting snow at Maynard's 

 Camp, head of Cottonwood Cr., Tobacco Root Range, 9000 ft., 

 Ajg. 10, 1902. 



Silene Antirrhina vaccarifolia, Rydberg, Bull. Torr. Bot. Club, 

 31:407. "Big Horn River, 1891, F. Tweedy." 



Silene Douglasii viscida, Robinson. Camp below $4er;y Glaci- 

 er, 6140 ft., Sept. i, 1903; Black Butte, Tobacco Root Range, 10,- 

 ooo ft., Aug. u, 1902; Cut-bank Canyon, Teton Co., July 27, 1897, 

 U, S. Williams; Head of Butcher-knife Cr., Little Belt Mts., 7.800 

 ft.. Ar.g. 14, 1901, F. A. Spragg, 808. 



*Silene noctiflora, L. An occasional weed in gardens and 

 waste places. Bozeman, 1898, 1904. 



Silene Suksdorfii, Robinson. Black Butte , Tobacco Root 

 Range, 10,000 ft., Aug. n, 1902. 



*Spergula arvensis, L. A weed in grain fields, rare. Bozeman, 

 July, 1898. 



Spergularia salina, J. & C. Presl. Common in alkali flats, Bow- 

 doin Lake, Malta, Aug. 25, 1903; Billings, June 30, 1903. 



Stellaria borealis, Bigelow. Plains, June 6, 1902 ; Middle Cr. 

 Canyon, July 30, 1902. The variety corallina, Fenzl. seems far more 

 common than the type in this state. 



*Stellaria graminea, L. A weed which should be found fre- 

 quently in door yards and waste places. Helena, E. N. Brandegee. 



