18 RANUNCULACEAR. _RANUNCULUS. 
R. Greenei. R. occidentalis var. Lyallii Gray Proc. Am. Acad. xxi, 373. 
R. tenellus var. Lyallii Robinsonin Gray Syn. Fl. i, 33. Hispidly hirsute 
with tawny hairs, or the upper parts nearly smooth: stem usually solitary, 
erect, 1-3 feet high, with few-several slender erect branches: leaves rather 
few, thin, 1-3 inches in diameter, cordate, deeply 3-cleft, the broadly-ob- 
ovate divisions acute, 3-5-cleft and acutely toothed: flowers small, on \slen- 
der pedicels, the pale yellow petals 1-3 lines long, not surpassing the spr- 
eading sepals achenes in rather dense globose heads, scarcely a line broad, 
minutely papillose and hispid, tipped with along slender-subulate curved 
and hooked beak. Common in open Fir forest, Oregon to Brit. Columbia 
and northern Idaho. 
2 Winter annuals. 
R. Douglasii. R. tenellus Nutt, T. &G. Fl. i, 23. not Viviani. Stem 
solitary, slender or moderately stout, branching, 1-3 feet high: radical 
leaves long-petioled, 3-parted or trifoliolate,the divisions deeply 3-lobed and 
the lobes acutely 3-toothed; cauline similar, or the upper 3-parted with 
linear lobes, or reduced to a single linear-lanceolate leaf or bract, all spar- 
ingly pubescent with small appressed hairs: sepals greenish, pubescent 
outside, oblong, obtuse, 1-2 lines long: petals broadly spatulate, a third 
longer than the reflexed sepals,attenuate below to a claw: achenes smooth, 
tipped with a short stout hooked beak. Common in moist places and river 
bottoms, California to Brit. Columbia. 
R. parvirvorvs L. §p. ed. 2, i, 780. Soft-pubescent with spreading hairs: 
stem erect, slender or stoutish, simple-much branched, 2-12 inches high; 
lower leaves 3-parted; the broad segment deeply 3-7-lobed; cauline leaves 
trifoliolate, the broad cunieform leaflets deeply cut into 3-5 lanceolate acute 
lobes: sepals about a line long, oblong, obtuse, subpersistent: petals obo- 
vate, attenuate below to a claw, about as long as the sepals, subpersistent : 
achenes few, in a loose globose head, papillose-hispid with short hooked 
hairs, tipped with a very short, hooked beak. In the shade of bushes and 
rocks, from the Columbia river to southern Oregon. Introduced from Eu. 
= = Style comparatively short. 
R. Californicus Benth. Pl. Hartw. 295. More or less pilose or hirsute: 
stems erect or nearly so, 6-25 inches high, from a cluster of somewhat 
thickened fibrous perennial roots: radical leaves usually pinnately ternate, 
the leaflets laciniately cut into 8-7 usually linear lobes or parts: flowers. 
5-10 lines in diameter; petals 5-15, narrowly obovate, deep glossy yellow, 
longer than the reflexed sepals: achenes nearly 2 lines long. much flatten- 
ed and with sharp edges, tipped with the short curved beak: heads com- 
pact, ovate or globular. Dry or moist ground, southern Oregon near the 
coast, and California. 
++ + Stems erect or ascending, not stoloniferous: roots fibrous, of 
short duration: ovaries with the stout subulate style stigmatose for 
much of its length, persisting in a straight or merely oblique beak. 
R. Pennsylvanicus L.f. Suppl. 272. Hirsute with rough spreading 
hairs: stem stout, erect 1-2 feet high: leaves ternate; the somewhat ovate 
acute leaflets 3-cleft, the divisions sharply cut and toothed: petals pale 
yellow, not longer than the spreading sepals: achenes flat, tipped with the 
short straight beak, crowded in an oblong head. In damp places, eastern 
Oregon to Brit. Columbia and the Eastern States. 
R. Maceunii Britton Trans. N. Y. Acad. xii, 3. R. hispidus Pursh F1. ii, 
395, not Michx. Stems ascending or declined, usually hirsute with spread- 
ing hairs, stout, 1-2 feet long: leaves all ternately compound: segments 
oval, acute, laciniately toothed: flowers few, middle-sized, rather long-ped- 
uncled; petals obovate, about 3 lines long, surpassing the spreading or 
hardly reflexed soon deciduous sepals; achenes mostly 1}¢ lines long, 
smooth, tipped with a stout straight flat-subulate beak, in globular or at 
