Parv 4, 1908] ROSACEAE 371 
leaflets, which are obovate, 1-2.5 cm. long, coarsely and doubly serrate; stem-leaves 
smaller, 3~5-foliolate, with acute or acuminate leaflets; flowers in a narrow cyme, 15-20 
mm. in diameter; hypanthium densely long-pilose, not glandular; bractlets linear or 
linear-lanceolate, usually less than half the length of the broadly ovate sepals, which are 
about 6 mm. long; petals yellow, orbicular or broadly obovate, about 10 mm. long, exceed- 
ing the sepals by about a half; stamens 25; pistils many ; styles thickened and glandular. 
TYPE LOCALITY: Ashland Butte, Oregon. 
DISTRIBUTION : Known only from the type station. 
9. Drymocallis glabrata Rydb. Mem. Dep. Bot. Columbia 
Univ. 2: 200. 1898. 
Stems several from a branching caudex, sparingly pubescent with long, almost arach- 
noid hairs, in age glabrous, not at all glandular or viscid, branched above, the branches 
slender, divergent; stipules obovate, entire or somewhat toothed; basal leaves with long 
slender petioles, thin, sparingly pubescent and glandular-atomiferous, in age almost gla- 
brous, with 7-9 leaflets, which are obovate-cuneate, obtuse, entire at the base, the upper half 
coarsely toothed ; stem-leaves with 3-5 leaflets, short-petioled or subsessile; flowers large, 
nearly 2 cm. in diameter, in an open cyme with slender diverging branches; hypanthium 
sparingly silky-villous, in age almost glabrous; bractlets linear-oblong, scarcely half as long 
as the broadly ovate sepals, which are 5 mm. or in fruit 7 mm. long; petals light-yellow, 
large, suborbicular, 8-10 mm. long, more than half longer than the calyx; stamens 25-30; 
pistils many; styles thickened and glandular. 
TYPE LOCALITY: Ellensburg, Washington. 
DISTRIBUTION : Known only from the type locality. 
ILLUSTRATION: Mem. Dep. Bot. Columbia Univ. 2: £1. 109. 
10. Drymocallis foliosa Rydberg, sp. nov. 
Stem stout, 4-5 dm. high, viscid-villous with long hairs; stipules ovate, coarsely 
toothed ; basal leaves 1-1.5 dm. long, with about 9 leaflets; petiole and rachis viscid-vil- 
lous; the upper leaflets rhombic-obovate, 4-5 cm. long, sparingly hairy and glandular- 
atomiferous, coarsely and more or less doubly serrate with sharp ovate teeth ; lower leaflets 
more rounded ; lower stem-leaves similar, the upper 3-5 foliolate, all with rather large and 
rhombic leaflets; cyme rather open and corymbiform; hypanthium viscid-villous, in fruit 
about 8 mm. broad; bractlets linear or linear-lanceolate, about 3 mm. long; sepals lanceo- 
late, acute or acuminate, 5-6 mm. long; petals yellow, rounded-obovate, about 8 mm. long; 
stamens about 25; pistils numerous; styles fusiform. 
Type collected in the Bridger Mountains, Montana, in 1896, 7. H. Flodman 596 (herb. N. Y. 
Bot. Gard.). : : 
DISTRIBUTION : Mountains of Montana, Wyoming, and northeastern Utah. 
11. Drymocallis valida (Greene) Piper, Contr. U. S. Nat. 
Herb. 11: 342. 1906. 
Poteniilla arguta Nutt. Jour. Acad. Phila. 7: 21, 1834. Not P. arguta Pursh. 1814. 
Potentilia fissa major T. & G. Fl. N. Am. 1: 446. 1840 
ae oe Nutt.; T. & G. Fl, N. Am. 1: 446, assynonym. 1840.— Rydb. Bull. Torrey 
Club 23: 245. 1896. a 
Potentilla valida Greene, Pittonia 3: 20. 1896. ; : 
Drymocallis glutinosa Rydb. Mem. Dep. Bot. Columbia Univ. 2: 196, 1898. 
Stem stout, tall, 4-10 dm. high, erect, striate, more or less pubescent with long, viscid 
or glandular hairs, branched above; stipules ovate, more or less toothed ; basal leaves 
pinnate ; leaflets 7-11, more or less pubescent or glabrate, glandular-atomiferous, 3-6 cm. 
long, the terminal one broadly obovate, the lateral ones obliquely elliptic or nearly 
orbicular, all coarsely serrate with broadly ovate or lanceolate, usually simple but often 
double teeth; stem-leaves similar but with fewer, sometimes more rhombic and acutish leaf- 
lets ; cyme open, with divergent branches, in fruit rather flat-topped ql flowers 18-22 mm. 
in diameter ; hypanthium viscid-villous; bractlets lanceolate, about a third shorter than the 
ovate-lanceolate pointed sepals, which are about 6 mm. or in fruit 1 cm. long; petals yel- 
