200 EANUNCULACEiE. 



lent and only a few in. high; herbage glabrous or the dilated petiole 

 sometimes sparingly villous-ciliate; leaves long-petioled except the 

 uppermost; radical round-ovate, toothed or entire, 3 to 6 lines long; 

 cauline elliptic-oblong to linear-lanceolate, entire or slightly denticu- 

 late, 1 to 2 in. long; flowers minute; sepals subscarious, mostly not 

 reflexed; petals commonly 1 to 3, less than 1 line long; achenes 

 numerous in a small globose head, beakless or nearly so. 



Low wet places, rare. .Napa Valley, Bigelov), 1854; and Sonoma, 

 Bioletti, May 1, 1892 (E. Bioletti Greene); to San Rafael, J. P. 

 Moore, Apr. 14, 1878. 



3. R. Bloomeri Wats. Glabrous somewhat succulent herb, the 

 stems 5 to 16 in. high, from a cluster of thick-fibrous or even slender- 

 fusiform roots; a few leaves simple, but mostly trifoliolate, the radical 

 long (1 ft. or less) -petioled; leaflets roundish, dentate with coarse 

 round teeth, usually petiolulate, sparsely incised or 3-lobed; flowers 

 few and large, IJ in. in diameter or less; petals 5, emarginate at apex, 

 the greenish area at base conspicuous and the gland large; achenes 

 turgid, IJ lines long, tipped with a slender subulate beak. 



Common in low fields near the coast (not in the inner Coast 

 Ranges): San Mateo Co. ; "West Berkeley; Marin Co.; Napa Valley; 

 Long Valley, Mendocino Co., .Bofanrfcr. Feb.-Mar. First collected 

 by H. G. Bloomer, pioneer member of the California Academy of 

 Sciences and amateur student of the local botany. 



4. R. orthorhyncus Hook. var. maximus. Diffuse, the stems 

 very stout, IJ to 3J ft. long, from a cluster of slender fusiform roots; 

 leaves ternately or biternately divided, the divisions broad, sharply 

 or laciniately cleft; radical leaves biternately compound, at least the 

 primary divisions stalked, on petioles 6 to 22 in.- long; petals 5 to 8, 

 oblong-ovate or orbicular, 8 or 9 lines long; aclienes with long 

 straight slender style as long as the body. — (E. maximus Greene.) 



Swampy places; first known from East Berkeley, where it is now 

 extinct; but seldom seen in the typical form; specimens from ilarin 

 Co. are referred here. 



5. R. canus Benth var. hesperoxys. Young herbage soft- 

 villous or conspicuously canescent on the under surface of the leaves; 

 stems IJ to 2 ft. high; leaves nearly all in a radical tuft, long- 

 petioled, deeply parted and subdivided into many lanceolate acute 

 segments; achenes large, flat, 3 lines long, including the short trian- 

 gular-subulate beak which is slightly curved at the tip. — (R. hesper- 

 oxys Greene.) 



Not common or at least little collected: Antioch, Davy, some of the 

 specimens having 8 petals; low hills near Vacaville, Jepson; perhaps 

 upper Napa Valley, Jepson, but not at all villous, the leaf-segments 

 very broad and merely cleft, the petals viniformly 5 and the achenes 

 typical. Clearly passing into the next. The type is silky-lanate 

 throughout and was collected by Hartweg in the fields of Butte Co. 

 in 1847. 



fi. R. Californicus Benth. Common Buttkrcuv. Herbage 



