MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 299 



As in P. intermedia, the corolla is in form intermediate between 

 those of P. e7n^etriformis and P. glandiiliJJora. Both may be hy- 

 brids of those two species, as all four were growing together. P. 

 hyhrida is nearest P. giandulijlora, having nearly the same color 

 of the corolla and the calyx, and the same glandular pubescence, but 

 the corolla is not contracted at the throat, and the sepals are obtuse 

 as in P. enipeh-iformis. 



In subalpine bogs, up to an altitude of 2500 m. 



Montana : Below Old Hollowtop, Pony Mountains, July 7, 1897, 

 Rydbei-g & Bessey, ^djy. 



* Phyllodoce glanduliflora (Hook.) ; Menziesia glandtilijlora Hook. 



FI. Bor. Am. 2 : 40 ; BryantJuis glandulijiorus Gray, Proc. Am. 



Acad. 7: 377 [Syn. Fl. 2': 37]. 



General habit as in the other species, but corolla elongated-urn- 

 shaped, light yellow ; pedicels and acuminate sepals glandular- 

 hirsute. Mountain sides and swamps, at an altitude of 2500-3500 m. 



Montana: East Boulder, 1887, ^- Tzucedy, gi ; Old Hollowtop, 

 Pony Mts., July 7, 1897, Rydberg t& Bessey, 46^8; Haystack Peak, 

 1887, F. Tweedy; Gallatin Peak, 1886, 11S6; Lake Plateau, 1897, 

 P. Koch, 26. 



* Cassiope Mertensiana (Bong.) Don, Edinb. Phil. Journ. 17: 157 



[DC. Prod. 7: 610; Syn. Fl. 2': z^x Bot. Cal. i: 456]. 



A low Lxcopodinin-YxVo. plant with small imbricated 4-ranked 

 carinate glabrous leaves, lateral peduncles, and pinkish bell-shaped 

 corolla. Moimtain sides, at an altitude of 2500-3500 m. 



Montana : Beaver Head Co., 1888, F. Tzveedy, ijy ; Old Hollow- 

 top, July 7, 1897, Rydberg & Bessey, 46jg; Gallatin Peak, 1886, 

 Tweedy, ii6g; Madison Co., 1892, Mrs. L. A, Fitch; Belt Mts., 

 Scribncr, ijy. 



Arctostaphylos Uva-Ursi (L.) Spreng. Syst. 2: 287 [111. Fl. 2: 



572; Syn. Fl. 2': 27; Man. R. M. 228; Bot. Cal. i: 453]; 



Arbutus Uva-Ursi 'L. Sp. PI. 395. 



In woods, up to an altitude of 2500 m. 



Montana : Indian Creek, July 21, 1897, Rydberg & Bessey, 4660; 

 Lewis & C-larke Co., Mrs. Muth; Gallatm Co., Mrs. Aldcrson; 

 Bridger Canon, 1892, W. T. Shazu ; Helena, 1892, F. D. Kclsey ; 

 Mt. Helena, 1883, Canby, 21S. 



Yellowstone Park : 1886, Francis Hall. 



