426 ADDITIONS AND CORRECTIONS TO VOL. I. 



6. R. alismsefolius, Geyer. The range of this species is from the Eocky Moun- 

 tains westward. The allied eastern species is distinguished as It. ambigens, Watson. 



10. R. glaberrimus, Hook. Extends to Washington Territory and Wyoming. 

 Group * * * includes the following species. 



H Leaves ternately or pinnately divided. 



1 l a . R. multifidus, Pursh. Stems floating or immersed, with ternately decom- 

 pound leaves, the divisions long and filiform, or rooting in the mud and the leaves 

 round-reniform and more or less deeply lobed and toothed ; the terrestrial form often 

 somewhat villous : petioles short, broadly stipulate-dilated at base : flowers large, 

 bright yellow, the 5 to 8 petals with conspicuous obovate scales : akenes in a rather 

 small globose head, beaked by a short straight style. R. Purshii, Richards. ; Hook. 

 Fl. Bor.-Am. i. 15, t. 7. 



Indian Valley, Plumas County (Mrs. E. M. Austin), and at Camp Bidwell, Modoc County, 

 Dr. Matthews. Arctic America to Utah, Colorado and the Northern States, and in Siberia. 



ll b . R. orthorhynchus, Hook. More or less villous, the stems often slender, 

 1 or 2 feet high, from a thick-fibrous root : leaves pinnately divided, the divisions 

 variously lobed and cut, the segments often narrow : sepals reflexed ; petals 3 to 8 

 lines long, bright yellow or purple-tinged outside : akenes large, flattened, in a close 

 globose head, with a slender straight beak as long as the body. Fl. Bor.-Am. i. 

 21, t. 9. 



Plumas County (Mrs. Austin) ; Siskiyou County (Greene), and northward to British Columbia. 



12. R. Californicus,. Benth., and var. canus, Brewer. From San Diego to 

 Marin County. 



13. R. repens, Linn., and 14. R. macranthus, Scheele. 



t- Leaves (at least the lower) only lobed. 



15. R. Nelsoni, Gray, and var. tenellus, Gray. Leaves more or less deeply 

 3- (or rarely 5-) lobed, the uppermost rarely parted, the lower usually cordate in out- 

 line. R. Eisenii, Kellogg, Proc. Calif. Acad. vii. 115, the leaves cuueate at base. 



From San Diego to Alaska, the more slender form chiefly in California. 



15 a . R. Bloomeri. Stout, glabrous or somewhat villous : leaves on long peti- 

 oles broadly stipulate-dilated below, mostly broadly ovate with cordate or truncate 

 base, slightly 3 - 5-lobed or the upper somewhat deeply so, crenate-toothed : flowers 

 large ; sepals reflexed ; petals 6 or 7 lines long, with a broad transverse scale at base : 

 ovaries in a depressed globose head, beaked by a stout straight style. 



In wet grounds near San Francisco, Dr. J. G. Bloomer. The specimens are imperfect and not 

 yet in fruit, but indicate a very distinct species. 



15 b . R. sceleratus, Linn. Glabrous : stems often stout and hollow, from a 

 fibrous root, | to 2 feet high : lower leaves round-reniform, deeply 3 - 5-lobed, the 

 lobes obtusely toothed above ; upper leaves nearly sessile, more deeply and narrowly 

 cut : petals scarcely exceeding the spreading sepals : akenes numerous, very small, in 

 an oblong-ovate or cylindrical head, mucronate. 



In Surprise Valley, Modoc County, Dr. Matthews. Probably introduced. 



16. R. hebecarpus, Hook. & Am. Guadalupe Island, Palmer. The variety 

 pusillus should be credited to Prof. W. H. Brewer. 



Page 9. 6. CALTHA. 



1. C. leptosepala, DC. Leaves round- to oblong-ovate (longer than broad), 

 Avith a somewhat narrowed and quadrate base, usually very obscurely crenate above 

 and rather coarsely and often acutely serrate below : flowers 1, very rarely 2, white 



