324 



MEMOIRS OF^ THE NEW YORK BOTANICAL GARDEN, 



Differs from P. hctcrophxJla in the dense white pubescence. In 

 rocky places, at an altitude of 1500-2500 m. 



Montana: Mill Creek, 1887,/^. Tweedy, 24s; Melrose, 1895, 

 Rydbcrg, 276"/; Spanish Basin, June 23, 1897, Rydberg & Besscy, 

 4.852 and 48jj ; Pony, July 8, 48 ji (white-flowered) ; Belt River,. 

 1881,7?. S. Williams, I2j ; Silver Bow Co., Mrs. Ida Christie; 

 Shields River, 1883, Scribner, i6y. 



Yellowstone Park : 1885,/^. Tzceedy, 402. 



* Phacelia alpina. 



Perennial by a short rootstock, about 2 dm. high, somewhat 

 grayish-strigose and hirsute, especially on the upper parts ; basal 

 leaves numerous, oblong-lanceolate or oblanceolate, entire, acute, 

 tapering into the petiole, somewhat grayish-strigose, about 5 cm. 

 long ; stem-leaves similar, but short-petioled, or the upper subsessile ; 

 inflorescence compound, the branches ascending, the lower ones- 

 naked for about 3 cm., then bearing one or two scorpioid clusters 

 which are 1-2 cm. long; calyx hispid, its lobes about 3 mm. long,^ 

 linear, obtuse or acutish ; corolla 5-6 mm. long and 4 mm. broad, lilac, 

 its lobes rounded ; stamens about twice as long as the corolla, slightly 

 bearded, with two broad and salient appendages attached to the 

 base. 



It is nearest related to P. hclcrophylla and P. leucophylla ; differs 

 from both in the smaller flowers and the long lower branches of the 

 inflorescence ; it most resembles the latter, but is less strigose, not 

 white, but merely grayish. It grows among rocks, on high moun- 

 tains, at an altitude of about 3000 m. 



Montana: Cedar Mountain, July 16, iS<^'/ , Pydbcrg d' Bessey, 

 48 jS (type) : Indian Creek, July 22, 4856; Melrose, 1895, Rydberg, 

 2767. 



Yellowstone Park: 1886, Rrancis //a//; 1873, C. C. Parry, 

 22^; Mammoth Hot Springs, 1884, Tzvccdy ; Hoodoo Peak, 1897, 

 P. Koch, ig. 



Phacelia sericea (Graham) Gray, Am. Journ. Sci. (II.) 34: 254 



[Syn. Fl. 2' : 166; Man. R. M. 256; Bot. Cal. i : 508] ; Eiitoca 



sericea Graham, Hook. Bot. Reg. jooj. 



In the mountains, up to an altitude of 3000 m. 



Montana: Beaver Head Co., 1888, Tweedy, 86; Helena, 1887,^ 

 F. D. Kelsev ; Lima, 1895, Rydberg, 2768; Cedar Mountain, July 

 16, 1897, Rydberg & Bessey, 4847 ; Indian Creek, July 22, 4846; 

 Upper Sand Coulee, 1887, ./?. S. Williams, 7(5.5'; McDonald's Peak^ 



