ae 
POTENTILLA,. - ROSACEA. 179 
HORKELIA. 
P. fruticosa L. Sp. 495. Shrubby, much branched,. 1-4 feet high- 
leaves pinnately 5-7-foliolate; stipules scarious; leaflets crowded, oblong- 
lanceolate, 2-12 lines long, entire, usually whiter beneath and the margin: 
revolute: flowers on slender pedicels in loose cymes or solitary: bractlets 
eyualling the acute sepals; petals yellow, orbicular, 2-6 lines long, ex- 
ceeding the calyx; stamens 30; carpels 20. On high mountains, Wash- 
ington to California and the Eastern States. 
§ 3. Style filiform, attached to the middle of the ovary or 
below the apex: peduncles axillary, 1-flowered: carpels glab- 
rous, short stipitate, the stipe and receptacle villous: herbaceous 
perennials with mostly creeping or decumbent stems and yellow 
flowers. . 
P. anserina L. Sp. 495. Creeping; ascending stem none; stolons 
slender, rooting and proliferous: leaves pinnate; stipules multifid ; leaflets 
9-19, with several minute pairs interposed, oblong sharply pinnatifid-ser- 
rate, nearly glabrous above, silvery-canescent beneath: pedicels scape- 
like, solitary, as long as the leaves. Borders of lakes and streams, Idaho 
to the Eastern States and far northward. 
P. Pacifica. P. anserina vir. grandis Lehm. Spreading by slender 
jointed runners: ascending stems none: leaves pinnate, 10-30 inches long; 
stipules scarious; leaflets 11-35, with small ones interposed, oblong, 
coarsely and sharply serrate, densely white-tomentose and silky beneath, 
smooth above, 44-2 inches long; peduncles scape-like, as long or longer 
than the leaves; bractlets lanceolate, acute, glabrate, about 3 lines long, 
equalling the oblong acute silky sepals; petals broadly ovate, 6 lines long, 
nearly as broad; style attached in the middle of the ovary: achenes 
ovoid, 1 line long. In salt marshes along the coast, Alaska to California. 
12 HORKELIA Cham. & Schlecht. Linnea ii 26. 
Perennial herbs with pinnate or pinnately parted leaves, ad- 
nate stipules and white or rose-color flowers in crowded or sub- 
capitate cymes. Calyx-tube campanulate, with 5 erect lobes 
and 5 alternate bractlets. Petals 5, linear or spatulate, more or 
less unguiculate.. Stamens 5 in one series or 10 in two series; 
filaments shorter than the calyx-lobes, triangular and petaloid or 
subulate, those alternate with the petals broadest and persistent. 
Carpels few to many, attached by their middle to the dry coni- 
cal villous receptacle: style filiform or thickened at base, nearly 
terminal: stigma obtuse. Achenes reniform-ovate. Seed sus- 
pended, with a thick and firm brownish testa. Leaflets not 
erowded ; 3 to many-lobed or -tcothed. 
* Style short, thickened at base. 
H. fusea Lindl, Bot. Reg. xxiii, t. 1997. Viscous-pubescent; stem 
rather slender, 2-3 feet high: radical leaves 12-19-foliolate, leaflets cune- 
ate-oblong, pinnatifid and incised; stipules. deeply laciniate: flowers 
crowded on the branches of the compound many-flowered cyme: bracts 
palmatifid, much shorter than the golmerules’ bractlets shorter and 
much smaller than the triangular-lanceolate calyx-lobes; petals cuneiform- 
obcordate, much longer than the calyx. In the mountains of eastern 
Oregon to California. 
H. tenella Rydberg Rey. Pot. H. fusca var. tenella Watson Bot. Cal: 
i, 181. Glandular-pubescent: stems slender, simple, 6-18 inches high: 
radical leaves pinnately 11-19-foliolate; stipules linear, the free portion 
