MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 317 



lobes, the shorter corolla, and the branches which do not show any 

 tendency to become wing-margined. P. KelseyiYi^s lanceolate-subu- 

 late calyx-lobes which are longer than the tube. P. collina differs 

 from the other two species in the form of the sepals, in being much 

 larger and not densely pulvinate. It grows on dry hills, at an alti- 

 tude of 1500-3000 m. 



Montana: Madison Co., 1888, Txvecdy, 1^4 (type) and jo, in 

 part; Upper Missouri, Di'. V. Havard ; Grafton, 1892,7?. S. Wil- 

 liams, 768; Mill Creek, 1887, Tzvecdy, 283; Park Co., 28s; Belt 

 Mountains, 1883, Scribner, 757. 



Colorado: 1862, Hall & Haj'boiir, 434. 



* Phlox albomarginata Jones, Zoe, 4 : 367. 



This has been distributed under the name Phlox Richardsonii, but 

 is distinct from that species. P. Richardsonii has much larger 

 flowers, and longer and more flaccid leaves, which are more or less 

 lanate above. P. albomarginata is nearer related to P. Kclseyi, P. 

 collina, P. caespitosa and P. condensata. From the first two it differs 

 in the more tufted pulvinate habit, the short leaves, the long corolla- 

 tube, being about twice as long as the short calyx, and the densely 

 glandular cah'x. YxoxwP. caespitosa a.nd. P. condensata it differs in 

 the short and broad leaves and the longer flowers. It differs from all 

 species, except P. collina and the next, in the chartaceous margins 

 of the leaves. It grows on dry mountains, at an altitude of 2000- 

 3000 m. 



Montana: Helena, 1887, P. W. Anderson; 1890, F. D.Kelsey; 

 Deer Lodge Co., Miss Frances Hobson. 



* Phlox diapensioides. 



Densely pulvinate-caespitose, about 2 cm. high; leaves numerous, 

 crowded, 4-5 mm. long, ovate, sharply mucronate, thick, with a 

 strong midrib and revolute hard margins, more or less glandular-pu- 

 berulent beneath and ciliate on the midrib and margins ; flowers ses- 

 sile, and only the corolla exserted from the tufts ; calyx about 5 mm. 

 long, somewhat glandular ; lobes lanceolate, in fruit diverging, 

 nearly as long as the tube ; corolla pink-purple, its tube about 8-10 

 mm. long, about twice as long as the calyx ; limb as in the preceding. 



This has been labeled P. caespitosa and P. caespitosa condensata, 

 but is amply distinct from both. It has somewhat the habit of 

 P. condensata, whose leaves also have a strong midrib and ciliated 

 involute margin. In P. condensata, however, the leaves are linear- 



