RANUNCULACE.E. 299 



ft. long, trailing, rooting at the lower joints: leaves ternately parted and 

 often subdivided: sepals spreading: petals 5: achenes 1^ lines long, 

 rather sharply margined, the nearly straight beak about If^ line long. — 

 Frequent in lawns at Golden Gate Park and elsewhere in the Bay district, 

 but scarcely naturalized. It is common about Eureka, Humboldt Co., 

 Marshall, where it may be either native or introduced. 



11. R. inaxiinus, Greene, Bull. Torr. Club, xiv. 118 (1887): R. mac- 

 ranthus, Bot. Calif., not Scheele. Pilose or hirsute, the stems stout, 2 — 5 

 ft. long, trailing but not rooting: leaves broad, ternate, the radical on 

 petioles 1 ft. long or more; leaflets laciniately lobed: sepals reflexed: 

 petals 5— 8, oblong-obovate, obtuse, 7 — 10 lines long: achenes thiekish; 

 the beak long, straight or slightly incurved; head roundish or broadly 

 ovate.— The type of this species is of the Bay region, and is not common. 

 It was formerly abundant in the marsh at Newbury Station, Berkeley, 

 and is in the hills east of Alameda and Oakland; being also credited to 

 Marin Co. In a smaller state, with quite small flowers, though with the 

 same large achenes and broad leaflets, it appears in the middle Sierra. 



12. R. Blooiiieri, Wats. Bot. Calif, ii. 426 (1880). Nearly as large as 

 the last, the usually glabrous but sometimes pilose herbage of a peculiarly 

 light green, the stems ascending: earliest leaves round-cordate, coarsely 

 crenate-toothed or lobed; the later ones 3— 9-foliolate, with leaflets 1 in. 

 long and nearly as broad, the coarse teeth rounded and somewhat regu- 

 lar: petals 5, retuse, '^4 in. long: achenes long-beaked, forming a roundish 

 head. — Common on low grounds adjacent to San Francisco Bay. A very 

 distinct species, much more frequent than the last. Feb. — May. 



13. R. Califoriiicus, Benth. PI. Hartw. 295 (1849): E. delphinifolhis, 

 T. & G. Fl. i. 659 (1840), not HBK.: R. dlssectus, H. & A. Bot. Beech. 316 

 (1840), not Bieb.: R. Deppei, Nutt.; T. & G. Fl. i. 21 (1838), under R. acvis, 

 therefore by implication wrongly described as to calyx. The type deep 

 green, with little or no pubescence, erect or decumbent, 1 — lig ft. high 

 the stems freely branching and many-flowered: leaves ternately much 

 dissected: sepals reflexed: petals 10 — 15, obovate-oblong, 4 — 5 lines long: 

 achenes 1)4 lines long, much compressed, the beak short and recurved- 

 head globose. Var. (1) laetus. Strictly erect, stoutish and fistulous, 

 rather stiffly hirsute and glaucescent below, the herbage of a light yel- 

 lowish green: segments of the much dissected leaves broader than in the 

 type: fl. and fr. the same. Var. (2) cauescens. Stout and low, the basal 

 parts canescently long- villous : leaves scarcely dissected, the 3 cuneate 

 main segments only deeply incised: fl. large, fully an inch wide: fr. as 

 in the above forms. Var. (3) cuiieatus. Slender, decumbent, the nascent 

 parts silky-pubescent, the plant otherwise glabrous: leaves more or less 

 deeply cleft into 3 cuneate lobes or segments, these incisely toothed: fl. 

 small: achenes very many, in a round-ovoid head. Var. (4) latilobus, 



