RANUNCULACEAE. 107 



obtuse, entire or obscurely crenate, long-petioled; the cauline smaller, ovate or 

 ovate-lanceolate, sessile; peduncles many, slender, in the axils of and longer 

 than the cauline leaves; flowers yellow, 8-15 mm. broad; petals 5-6, obovate- 

 oblong; heads of numerous thick short-pointed small nearly globose akenes. 

 Blue Mountains, rare. 



Ranunculus hebecarpus H. & A. Annual; whole plant hairy; stems slender, 

 mostly erect, 15-30 cm. tall; leaves 2-3 cm. broad, 3-parted, the lobes incisely 

 3-lobed; petioles of the leaves much longer than the blades; petals small, 2 

 mm. long, about equalling the sepals; akenes flattened, with short hooked 

 beaks, the sides roughened and covered with hooked hairs. In copses in 

 dry soil in early spring. 



Ranunculus glaberrimus Hook. Nearly glabrous throughout, the stems 

 erect or ascending, 5-15 cm. high; roots fascicled, elongate, fleshy; radical 

 leaves ovate, entire or crenately 3-lobed at apex, 1-3 cm. long, on petioles as 

 long or longer; cauline cuneate-obovate, deeply 3-lobed, usually sessile; 

 petals 5-15, broadly obovate, 5-10 mm. long, bright yellow; akenes subglobose, 

 smooth, short-beaked, aggregated in a globose head about 1 cm. in diameter. 

 Common in moist places; blooming in earliest spring. 



Ranunculus sceleratus L. Annual, glabrous; stems erect, hollow, 15-40 

 cm. high; leaves pale green, the basal ones reniform orbicular, deeply 3-lobed, 

 the cauline 3-5-lobed or parted and the divisions cleft or lobed; petals pale 

 yellow, scarcely longer than the calyx; akenes short-beaked, smooth, numerous 

 in a cylindric head. Rare in moist places but undoubtedly native. 



Ranunculus eschscholtzii Schlecht. Perennial, glabrous or nearly so, 

 10-20 cm. high; leaves ciliate, the basal orbicular, deeply 3-5-cleft or parted, 

 the cuneate divisions again lobed or cleft; cauline mostly 3-parted, the 

 lobes usually entire; flowers few; petals pale yellow, 6-10 mm. long, ex- 

 ceeding the sepals; head of akenes oblong; akenes swollen, marginless, glabrous, 

 tipped with a straight beak. In moist copses at high altitudes in the Blue 

 Mountains. 



Ranunculus bongardi Greene. Erect, 40-60 cm. tall, glabrous or somewhat 

 pubescent; leaves deeply 3-5-cleft, the lower cuneate-obovate, incisely 2-5- 

 toothed; petioles longer than the blades; flowers few, in open cymes, long- 

 pedicelled; petals 5, very small, pale yellow; akenes much flattened, hispid 

 on the faces, each with a slender circinate beak, aggregated into globose heads. 

 Common in shady copses. 



Ranunculus bongardi douglasii (Howell) Davis. Similar to R. bongardi 

 but less pubescent or sometimes glabrous; akenes smooth, the beak shorter. 

 In moist places. All intergrades with the preceding occur. 



Ranunculus platyphyllus (Gray) A. Nelson. Stout and tall, 40-80 cm. 

 high, usually rough-pubescent with long hairs; roots fascicled, thick-fibrous; 

 leaves pinnately 3-5-divided, the divisions stalked and again 3-5-cleft or 

 parted; ultimate segments cuneate-oblanceolate or obovate, incisely few- 

 toothed; petioles of the radical leaves exceeding the blades; flowers in an open 

 cyme, long-peduncled; sepals hairy; petals 5, bright yellow, obovate, 1.5 cm. 

 long; akenes flattened, smooth, with stout straight beaks. Common in low 

 meadows. 



Ranunculus pennsylvanicus L. f. Stout and tall, hirsute with spreading 

 hairs, erect, 30-100 cm. high, the root usually annual; leaves ternately com- 

 pound, the leaflets ovate, acute, 3-cleft; flowers small; petals pale yellow, not 

 longer than the sepals; akenes flat, obscurely margined, each tipped with a 

 short straight beak, crowded in a short cylindric head. In damp places, 

 Rathdrum, Idaho, Sandberg and Leiberg. 



