18 RANUNCULACE,E. RANUNCULUS. 



K. Greenei. R. occidentalis var. Lyallii Gray Proc. Am. Acad. xxi, 373. 

 R. tenellus var. Lyallii Robinson in Gray Syn. Fl. i, 33. Hispidly hirsute 

 with tawny hairs, or the upper parts nearly smooth : stern 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 Blen- 

 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 ?', 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. PARVIFLORUS 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 yito 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 bsak. In the shade of bushes and 

 rocks, from the Columbia river to southern Oregon. Introduced from Eu. 



= = Style comparatively short. 



R. Californicus Benth. PI. Hartw. 235. 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 pinimtely ternate, 

 the leaflets laciniately cut into 3-7 usually linear lobes or parts : flowers 

 5-10 lines in diameter; petals 5-13, 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. 



t* -n- 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. Pennsylvanieus 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. Macounii Britton Trans. N. Y. Acad. xii, 3. R. hispidus Pursh Fl. 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- 

 imcled; petals obovate, about 3 lines long, surpassing the spreading or 

 hardly reflexed soon deciduous sepals ; achenes mostly \y% lines long, 

 smooth, tipped with a stout straight flat-subulate beak, in globular or at 



