306 NORTH AMERICAN FLORA [VoLUME 22 
than in related species and with erect branches; stipules small, ovate or oblong, entire or 
toothed; leaves all ternate, the lower with petioles 2-10 cm. long, more or less hairy; 
leaflets broadly obovate, coarsely crenate, 2-4 cm. long and 1-3 cm. wide, the teeth often 
mucronulate; flowers small, about 5 mm. in diameter, on pedicels 5-15 mm. long from the 
axils of upper leaves, making the branches finally resemble leafy racemes; hypanthium 
glandular-pubescent, in fruit about 5 mm. in diameter; bractlets ovate-lanceolate or ob- 
long, acute, a little shorter than the ovate-acute sepals; petals yellow, obovate-cuneate, 
sometimes slightly emarginate, much shorter than the sepals; stamens about 10; pistils 
very numerous; styles terminal, thickened and glandular at the base ; ripe achenes whitish, 
smooth. 
TYPE LOCALITY: Butte County, California, 
DISTRIBUTION : British Columbia to Saskatchewan, Colorado, Arizona, and Lower California. 
ILLUSTRATION : Mem. Dep. Bot. Columbia Univ. 2: Al. 9. 
14, Potentilla flavovirens Rydberg, sp. nov. 
Annual or biennial, whole plant light-green ; stem strict, 1.5-3 dm. high, densely and 
softly pubescent, branched above with strongly ascending branches; basal leaves ternate ; 
petioles 1-3 cm. long, softly pubescent; leaflets cuneate-obovate, 5-15 cm. long, coarsely 
crenate, softly hirsute, and slightly glandular-pruinose; stem-leaves similar but leaflets 
more oblong-obovate, often 2 cm. long, scarcely glandular, the upper short-petioled ; 
stipules ovate-lanceolate, often almost 1 cm. long; infloresence often corymbiform ; hypan- 
thium hemispheric, softly pubescent, in fruit 4-5 mm. broad; bractlets lanceolate, about 4 
mim. long, nearly equaling the ovate sepals; petals yellow, ovate, scarcely half as long as 
the sepals ; stamens about 20; pistils very numerous; styles short and fusiform. 
Type collected in the mountains of northern Lower California, in 1885, C. R. Orcutt (herb. 
Columbia Univ.). 
15. Potentilla Kelseyi Rydberg, sp. nov. 
Biennial; stem stout, 6-7 dm. high, glandular-villous, branched above and leafy; 
leaves ternate, the basal and the lower cauline ones with petioles 8-12 cm. long and glandular- 
villous; leaflets obovate or cuneate-obovate, 3-5 cm. long. incised-crenate with large 
ovate teeth, thin, sparingly pubescent on both sides; the upper stem-leaves with shorter 
gtioles ; stipules lance-oblong, acute or obtuse, 1-1. 5 em. long; inflorescence rather short 
J fap” compact ; hypanthium rather flat in fruit, 5 mm. wide; bractlets and sepals subequal, 5 
mm. long, linear-lanceolate; petals obcordate, apperediy: white, about half as long as the 
sepals; pistils rather few for the group. 
a aves collected in the vicinity of Helena, Montana, in 1891, F. D. Kelsey (herb. N. Y. Bot. 
ard.) 
16. Potentilla flexuosa Raf. Aut. Bot. 164. 1840. 
Potentilia fabradorica Lehm. Delect. Sem. Hort. Hamb. 1849: 12. 1849. 
Potentilla monspeliensts labradorica Fernald, Rhodora 10: 50. 1908. 
Apparently perennial or at least biennial; stem ascending or erect, 1-4 dm. high, gla- 
brous or nearly so, or softly and sparingly silky-villous above ; leaves ternate, the lower 
with petioles 5-10 cm. long, glabrous ; leaflets broadly obovate or rotund, thin, 2-4 em. long, 
glabrous, coarsely crenate with broad rounded teeth; stipules ovate or ovate-lanceolate, 
1-1.5 cm. long, glabrous or nearly so, entire.or toothed; upper stem-leaves similar but 
with short petioles and narrower leaflets; inflorescence short; hypanthium rather flat, 
sparingly pubescent, in fruit a little over 5 mm. wide; bractlets oval or elliptic, usually ob- 
tuse, about 4 mm. long; sepals ovate, acute, about 5 mm. long; petals broadly obcordate 
with an open notch at the apex, yellow, almost equaling the sepals; stamens about 20; 
pistils numerous; styles short, fusiform. 
TYPE LOCALITY : Labrador. 
i: DISTRIBUTION : Subarctic America from Labrador to Fort Good Hope on the lower Mackenzie 
iver. 
