68 MEMOIRS FROM THE DEPARTMENT OF BOTANY OF COLUMBIA UNIVERSITY 
Nevada: 8. Watson, No. 337, 1868 (type). 
Montana: F. V. Hayden, 1860; Rydberg, No. 2687, 1895. 
Wyoming: T. C. Porter, 1873. 
47. Potentilla gracilis Dougl. 
Potentilla gracilis Dougl.; Hook. Bot. Mag. pl. 2984. 1820. 
Don, Gard. Dict. 2: 554; Dietr. Syn. Pl. 83: 182; Walp. Rep. 2: 33; Ann. 2: 
493; Lehm. Rev. Pot. 107. 
poe & Gray, Fl. N. Am. 1: 440; Eat. Man. Ed. 7: 457; Eat. & Wr. N. Am. 
Bot. 373; Torr. Bot. U. S. Expl. Exp. 239; Rothrock, WE : Geol. Surv. 4: 118; Wate. 
Proce. oe Acad. 8; 557 (in part); Brewer & Wats. Bot. Cal. 1: 179 (in part); Gray, 
Proc. Am. Acad. 8: 381; Coop. Pac. R. R. Rep. 12: Book 2, Part 2: 48 (?); Rydb. 
Bull. Torr. Bot. Club, 24: 5. 
Hook. Fl. Bor. Am. 1: 192; Macoun, Cat. Can. Pl. 138 and 517 (in part). 
Intusrrations: Bot. Mag. pl. 2984. PuatE 24, f. 1, 2, dissection of flower, f. 3; 
stamen, f. 4; pistil, f 5; fruiting hypanthium and calyx, f. 6. 
Stem 4-7 dm. eh slender, slightly silky-villous, with erect or ascending branches; 
stipules lanceolate, 1-3 em. long, entire, or with 1-2 teeth. Basal leaves with slender 
petioles 1-1.5 dm. long, digitate with 5—7 leaflets, green and nearly glabrous above, densely 
and finely white-tomentose beneath; leaflets 3-6 cm. long, oblanceolate, divided about 
half-way to the midrib into lanceolate triangular coarse teeth. Stem leaves similar but 
with shorter petioles. Cyme rather narrow. Hypanthium long-silky, in fruit 8-10 mm. 
in diameter. Corolla 15-20 mm. in diameter; petals obcordate, deeply emarginate, 
much exceeding the sepals. Bractlets lanceolate, a little shorter than the ovate acuminate 
sepals. 
The true P. gracilis is a very rare plant and is confined to the northern Pacific Coast. 
What has gone under this name is either P. pulcherrima or the next following species. It 
differs from both in the narrow leaflets, which are oblanceolate, acute and coarsely 
toothed with triangular teeth of the same form as in P. recta. The leavesare only slightly 
silky above and finely tomentose beneath, and the branches of the eyme are very slender 
and erect. The following specimens have been examined : 
Oregon: Scouler; Douglas ; Nuttall: Tolmie, 1851; E. Hall, No. 136, 1871; T. 
Howell, 1882; W. H. Suksdorf, Nos. 325 and 2491, 1896. 
Washington: Dr. Ruhn; Wilke’s Expedition, No. 141; G. H. Hicks, No. 216, 1890; 
W. G. Edwards, 1896; T. Kincaid. 
Vancouver Island: John Macoun, 1887; No. 182, 1893 
Kodiak Island: (Collector not given). 
