SUPPLEMENT TO THE FLORA OF MONTANA. 51 



daytonia Virginica, L., as to Montana specimens, is C. multi- 



fcutlis, Nels. 



Lewisia triphylla, Robinson, Syn., Flora, i 1269. Occurs in 

 alpine situations, resembling a small form of Claytonia multicaulis. 

 The localities below greatly extend its range eastward. 



Granite Range, Carbon Co., Aug. 1899, 11,500 ft., Peter Koch; 

 Lake Plateau, Carbon Co., Aug. 1899, 9000 ft., Peter Koch. 



Montia perfoliata, Howell. All the specimens quoted by Ryd- 

 berg (Flora, 139) seem good M. parviflora, Howell, which is separat- 

 td from perfoliata by its smaller sepals, petals and seeds ; the latter 

 species does not occur east of the Divide and is rare in damp, shady 

 places west of it. 



Plains, June 6, 1902; Thompson Falls, June 7, 1902. 



*Portulaca oleracea, L. A rare weed in gardens. 

 Craig, July 29, 1900; Bozeman, Aug. 18, 1898; Glendive, July 9, 

 1901. 



CARYOPHYLLACE^. 



Arenaria capillaris formosa, Regel. Ahpine and subalpine sit- 

 uations. Flat-top Mtn., Teton Co., 7000 ft., July 5, 1897, R. S. 

 Williams; Sperry Glacier Camp, 6000 ft., Sept. I, 1903. 



Arenaria congesta, Nutt. In alpine and subalpine situations. 

 Mt. Bridger, 9000 ft., July 3, 1900; Mt. Hyalite, 10,000 ft., Aug. I, 

 1902; Monida, 7000 ft., June 26, 1902. 



Arenaria lateriflora tenuicaulis, n. var. 



Like the type except in its capillary, spreading stem with longer 

 internodes and its linear-lanceolate or linear oblong acute leaves 

 with usually sparser pubescence. 



Swan Lake, near Big Fork, Mont., July 6, 1902, Walter Lehman, 

 154. and I would include the nearly glabrate form from Peel's Riv- 

 ?r near the mouth of the Mackenzie, N. W. T., Miss E. Taylor, in- 

 stead of placing it with the variety glabrcsccns, Robinson (Syn. Flora, 

 i : 238). Apparently an arctic and subalpine variety, rare in Montana. 



Arenaria verna, L. The typical glabrous form. 



St. Mary's Lake, July 4, 1897. R. S. Williams; Single-shot Mts. 

 Teton Co., 7000 ft., July 4, 1897, R. S. Williams; Forks of Cut-bank 

 Cr., July 27, 1897, R. S. Williams; Divide Mtn., Teton Co., July 16, 



