Part 4, 1908] ROSACEAE 317 
shorter than the broadly lanceolate sepals, which are 5-6 mm. long, acuminate; petals 
yellow, obcordate, 7-8 mm. long; stamens 20; pistils many; styles filiform. 
TYPE LOCALITY : Not given, but the type was collected near Salt Lake City, Utah, June 10, 
1880, Mf. E, Jones 1765 (herb. N’ V. Bot. Gard.). ’ a 
DISTRIBUTION: Utah, Wyoming, and northern Arizona. 
ILLUSTRATION : Mem. Dep. Bot. Columbia Univ. 2: Al. 21, f. 2-6. 
53. Potentilla longiloba Rydberg, sp. nov. 
Perennial, with a thick short woody caudex ; stem stout, 3-5 dm. high, hirsute-strigose 
and woolly; leaves digitately 7-foliolate or the uppermost 3-5-foliolate; petioles of the 
lower ones 5-10 cm. long, villous; leaflets 3-5 cm. long, dissected to near the midrib into 
linear or linear-lanceolate divisions, loosely villous above, deusely white-tomentose beneath ; 
stipules large, lanceolate, 2-3 cm. long; inflorescence dense and few-flowered; hypan- 
thium densely silky, in fruit8 mm. broad; bractlets linear-lanceolate, usually equaling the 
ovate-lanceolate sepals, which are5-4 mm. long, acuminate; petals obcordate, about 8 mm. 
long; stamens about 20; pistilsmany; styles filiform. 
é a collected at Lo-Lo, western Montana, in 1897, Elrod and assistants 110 (herb, N. Y. Bot. 
ard.). 
DISTRIBUTION : Western Montana and northern Idaho. 
54. Potentilla Blaschkeana Turez.; Lehm. Hamb. Gart. 
& Blumenz.9: 506. 1853. 
Poienitilla gracilis 8, Wats. Bot. King’s Expl. 88, in part. 1871. Not P. gracilis Dougl. 1829. 
Potentilla fiabelliformis clenophora Rydb. Bull. Torrey Club 24: 7. 1897. 
Potentilla clenophora Rydb. Mem. Dep. Bot. Columbia Univ. 2: 75. 1898. 
Perennial, with a short caudex; stem stout, 5-8 dm. high, sparingly silky, branched 
above; stipules large, 1-2 cm. long, lanceolate or ovate-lanceolate, acute, the upper often 
coarsely toothed ; basal leaves digitate, of about 7 leaflets, silky or nearly smooth and green 
above, white-tomentose beneath, with petioles 5-15 cm. long; leaflets about 5 cm. long, 
obovate in outline, deeply cleft into linear or oblong divisions, often divergent ; stem-leaves 
similar but smaller and short-petioled ; cyme many-flowered ; hypanthium silky, in fruit 
often over 1 cm. in diameter; bractlets oblong-lanceolate, often much shorter than the 
broadly lanceolate or ovate, long-acuminate sepals, which are 5-6 mm. long; corolla 15-20: 
mm. in diameter; petals broadly obcordate, deeply notched at the apex, much longer than 
the sepals ; stamens about 20; pistils numerous; styles filiform. 
TYPE LOCALITY: Russian Settlement [California]. . : 
DISTRIBUTION : Meadows, Alberta to British Columbia, northern California, and northern 
Wyoming. - 
ILLUSTRATIONS: Lehm. Rev. Potent. f/. 64; Mem. Dep. Bot. Columbia Univ. 2: f/. 28, f. 6. 
55. Potentilla flabelliformis Lehm. Stirp. Pug. 2: 12. 1830. 
Potentilla gracilis fabelliformis Nutt.; T. & G. Fl. N. Am. 1: 440. 1840. 
Potentilla flabelliformis tenuior Lehm. Rev. Potent. 108. 1856. 
Perennial, with a short caudex; stem slender but strict, 4-6 dm. high, silky-strigose, 
branched above; stipules lanceolate or linear; leaves digitate, of about 7 leaflets, densely 
silky above, white-tomentose beneath; leaflets 3-5 cm. long, pectinately divided into nar- 
rowly linear lobes, which are generally stiff and with revolute margins; cyme open but 
branches rather short and strict ; hypanthium silky-villous, in fruit about 8 mm. in diameter ; 
bracts linear-lanceolate, much shorter than the triangular-lanceolate acuminate sepals, 
which are 4-5 mm. long; corolla 10-12 mm. in diameter; petals obcordate, a little longer 
than the sepals; stamens 20; pistils many, styles filiform. 
TvPE'LocaLity: [Not given in the original publication but supplied in Hooker’s Flora] Plains 
of the Saskatchewan. 3 . ; 
DISTRIBUTION: Meadows from Saskatchewan to British Columbia, Wyoming, and northern 
California. 
ILLUSTRATIONS: Lehm. Monog. Potent. Suppl. A/. 6; Hook. Fl. Bor. Am, 1: £1. 66; Mem. 
Dep. Bot. Columbia Univ. 2: p/. 28, f. 1-0. 
XII. Graciles. Erect, usually rather tall perennials. Leaves digitately 5~7-foliolate ; 
the leaflets obovate or oblanceolate, thin, green above, more or less tomentose beneath, 
serrate or crenate. Flowers middle-sized or large. Petals obcordate. Stamens about 2). 
Pistils many ; styles filiforin. 
