MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 315 



Bozeman, 1892, IV. T. Shaw; Bozeman, 1883, Scribner, i^S; 

 Virginia City, 1871, Hayden Survey; Odell's, 1880, Watson. 



Yellowstone Park : Dr. Chas. H. Hall^ 1888 ; Mammoth 

 Hot Springs, 1885, F. Tweedy, 82y. 



* Phlox multiflora A. Nelson, Bull. Torr. Bot. Club, 25 : 278 [E. 



Nelson, Rev. 20]. 



Resembles somewhat P. andicoJa in leaf and habit, but is char- 

 acterized by large flowers resembling those of P. long/foIia, the 

 scarcity of fascicled leaves and the nearly total absence of pubes- 

 cence, except on the peduncle and calyx which are somewhat 

 puberulent. It grows on hills, at an altitude of 2000-3000 m. 



Montana: Spanish Basin, 1896, Flodman; Lake Plateau, 1897, 

 /'^/(^r /ir<9c/^; Beaverhead Co., 1888, Tzueedy, 1^2; Spanish Basin, 

 1897, Rydbcrg & Bessev, 4810; Mt. Chauvet, 4806. 



* Phlox multiflora depressa E. Nelson, Rev. W. N. Am. Phloxes, 20. 



Depressed-cespitose, with shorter leaves i cm. long, and smaller 

 subsessile flowers with the lobes 6-7 mm. long. 



Montana and Idaho: Mt. Chauvet, July 29, 1897, Rydberg & 

 Bessey^ 4808. 



* Phlox costata. 



Diffusely cespitose ; more or less villous on the peduncles, calyx 

 and upper part of the stem ; leaves about i cm. long, linear-subulate, 

 acerose ; midrib prominent and margin slight!}^ revolute ; flowers 

 short-peduncled ; calyx strongly ribbed and generally villous be- 

 tween the ribs ; sepals subulate, about equalling the tube, more or 

 less divergent, especially in fruit; corolla bluish, turning white, the 

 tube about twice as long as the calyx ; lobes almost orbicular. 



It has the general habit of the preceding and the corolla of the 

 next ; it differs from P. multijiora in the shorter calyx, which is more 

 or less villous, and the longer corolla-tube. It is distinguished from 

 P. Kelseyi by the narrow subulate leaves and the lack of ciliation. 

 It grows at an altitude of 3000 m. 



Montana: Cedar Mountains, July 16, 1897, Rydberg & Bessey, 

 4807. 

 * Phlox linearifolia (Hook.) Gray, Syn. Fl. 2^ : 133 ; Phlox speciosa 



Uncarifolia Hook. Kew Journ. Bot. 3 : 289. 



Differs from P. longifolia in the very narrowly linear leaves, 

 only about 2 mm. wide, the shorter corolla-tube and acerose sepals. 



Montana : Butte, 1896, /. F. Kemp. 



