Eanunculux. KANUNCULACEiE. 35 



Var.* Blankinshipii, RoniNSON, n. var. Silky-Liuate induiiientuin perBistiiig but 

 less cleuse thau in tlie type: akenes conspicuously liispid-papillose. — Capay, Yolo Couuty, 

 Calif., J. W. BlauUnshlj), 15 April, 1893. 



3. Short-st filed ; the iutrorsely stifijniatic styU's thickish-subulate and mostly all persisting iu 

 the short and straight or recurved beak : herbage hirsute or pubescent. 



O Lax or weak-stemmed, Californiau, no stolons : petals more thau 5 ; lieak of akenes suIj- 

 ulate and more or less hooked. 



R. Californicus, Benth. Usually pubescent or hirsute, 6 to 25 inches high, brandling 

 and naked above: petals 6 to 15 (sometimes only 5?), deep glossy yellow, or becoming 

 paler, oblong or narrowly obovate, a tliird to half inch long: akenes fiat but only slightly 

 margined, 2 lines or less long, and beak about half line long. — PI. Ilartw. 295 ; Rrew. & 

 Wats. Bot. Calif, i. 7 (excl. var. cams) ; Gray, 1. c. 37'J. N. disscctus, Hook. & Am. Bot. 

 Beech. 316, not Bieb. li. arris, var. (ik'ppii, Nutt.) Torr. & Gray, Fl. i. 21. li. d^lj.hiui- 

 foliusf Torr. & Gray, 1 c. 659, not IIBK.* — Dry or barely moist ground, common through- 

 out all the western part of California and adjacent Oregon; early coil, by Dourjlas and 

 by 2h. Coidter. The typical form with leaves some teruately divided or parted and some 

 pinnately 5-divided into linear or narrow lanceolate and often 2-3-parted divisions, passes 

 freely into 



Var. latilobUS, Gray. Radical leaves palmately 3-parted or divided into broadly or 

 narrowly cuneate incisely cleft or laciniate divisions, and cauline leaves correspondingly 

 coarse. — Proc. Am. Acnd. xxi. 375. It. Ludovicianus, Greene, Bull. Calif. Acad. Sci. ii. 58. — 

 A common form, especially southward, from San Francisco Bay to San Diego and San Ber- 

 nardino. Some forms too nearly approach R. canus.^ 



O O Strictly erect species, introduced from Europe, no stolons : very short styles stigmatase 

 for all or most of their length : petals 5, broad, a third to half inch long. See also R. 

 pai-vulus. 



R. AcKis, L. Tall, not bulbous-thickened at base of stem, summer-flowering: leaves of 

 rounded outline, pedately .5-parted or almost divided ; but divisions not petiolulate, 2-3 cleft 

 and laciniate, lobes and teetli acute : calyx merely spreading : petals smaller and less glo8.sy 

 than in the next : short style more prominent. — Spec. i. 554 ; Curt. Fl. Loud. i. t. 39 ; fI. 

 Dan. t. 2415; Torr. & Gray, Fl. i. 21, excl. var. — Moist ground, Atlantic States an<i 

 Canada, especially eastward (Nat. from Eu.) : Newfoundland, &.c., where,** as in Greenland, 

 perhaps indigenous. 



R. bulb6su8, L. a foot or two high from a globose solid-bulbous base or corm, spring- 

 flowering: radical leaves of ovate outline, divided into 3 roundish leaflets, of whidi the 

 middle one is conspicuously and the lateral slightly if at all petiolulate, and all 3-cleft or 

 parted and incised, lobes and teetli mostly obtuse : petals ohovate-orbicular, deep glossy 

 yellow: calyx reflexed: style very short. — Spec. i. 554; Fl. Dan. t. 551 ; Schkuhr, Ilandb. 

 t. 152; Bigel. Med. Bot. iii. 61, t. 47. — Meadows and pastures, Canada to Virginia, and 

 even Louisiana, but most common in New England.* { Nat from Eu. ) 



O O Erect or ascending, not stoloniferous, 5-petalous : straiglit and stout-subulate style 

 stigmatose for a good part of its length, and persisting in a l)road-subulatc bt\ik. 



R. Pennsylvanicus, L. f. Erect from an (at least sometimes) anniud root, hirsute with 

 widely spreading almost hispid hairs : stem stout, a foot or two high, leafy to the top : leaves 

 all ternately compound and petiolulate leaflets Sparted or deeply cleft into oblong or 

 cuneate-lanceolate and laciniate segments and lobes, these acute : peduncles sh«)rt : jietals 

 oblong or obovate and small, a line or two long, not surpassing the reflexed calyx : akenes a 

 line long, pointed with a nearly sLraigiit short beak, Ijecoming spicate in the oblong or 



1 Add syn. f R. rugulosus, Greene, Pittonia, ii. 58. 



2 A number of further varieties of the polymorphous Ji. Callfortiicvs liave been characterized by 

 Prof. Greene, Fl. Francis. 299, & Erytliea, i. 125; the material at haml, however, fails to show these 

 forms well marked among frequent intermediates. 



* There is little iu its mode of occurrence in Newfoundland to sutr^est indigenous nature, since it 

 appears there as elsewhere in America along roadsides, about habitittioiis, and iu pastures. 



* Sj^aringly introduced also in the far west, S. Brit. Columbia, Maamn. 



