Trollius. RANUNCULACEiE, 27 



rep. 2. p. 361 ; Nutt. gen. 2. p. 22. DC. prodr. 1. p. 45. C. ficarinides, 

 Pursh, fl. 2. p. 309. C. palustris /?. J3C. /. c? Ranunculus Ficaria, Mult. 

 Cav. p.' 1591 



(5. flabelUfoHa: stem procumbent; leaves all petioled, broadly renifbrm, 

 the lobes widely spreading. — C. dcntata, Muhl cat. C. flabcllifolia, Pursh ! 

 fl. 2. p. 390. /; 



Swamps, Canada ! to South Carolina, and west to the Pacific ! April- 

 May. — Stem mostly erect, rather thick and succulent (in 6. more slen- 

 der), 6-10 inches high, corymbosely or dichotomously branched above (ex- 

 cept in y.). Radical leaves 2-4 inches broad, on petioles 3-8 inches or more 

 in length, crenatelv or acutely dentate, or quite entire. Flowers few, 1-1 i 

 inch in diameter (in S. smaller), pedunculate, bright yellow. Carpeh ob- 

 long, somewhat recurved, mucronate with the style ; the point at first in- 

 flexed, but at length nearly straight. 



2. C. osarijolia (DC): stem nearly erect, 1-flowered ; leaves reniform- 

 cordate with the sinus obtuse, crenate ; sepals 6-7, oval. DC! .^tjst. 1. p. 

 309. (v. s. in herb. Lamb.) 



Unalaschka and the Aleutian Isles. — Stem weak, longer than the leaves. 

 Leaves 12-15 lines long, 2 inchf^s broad ; those of the stem nearly ses- 

 sile. Sepals yellow, like those of C. palustris, but smaller. DC — Scarcely 

 more than a variety of C. palustris, and apparently identical with the var. 

 minor of De CandoUe. 



3. C natans (Pallas): stem procumbent, floating; leaves reniform-cor- 

 date, crenate, Avith the lobes somewhat approximated, obscurely crenate to- 

 wards the base, toothed towards the summit; sepals oval; carpels with a 

 straight beak. DC. prodr. I. p. 45; Hook.jl. Bor.-Am. 1. p. 22. 



Creeping on the surface of deep sphagnous swamps, in tne woody central 

 districts of British America, from Canada to lat. 60"; rare. Dr. Richard- 

 son. — Flowers white, not half as large as in C. palustris. Hook. Capsules 

 in a dense head ; anthers oval. R. Br. 



4. C arctica (R. Brown): stem creeping; leaves reniform, repandly 

 crenate, obtuse; carpels (12-16) imbricated; stigma persistent, with the 

 apex rounded ; stamens 20 or more, with the anthers linear. R. Br. in 

 Parry\'i 1st voy. app. p. 265 ; Hook. f!. Bor.-Am. 1. p. 22. 



Melville Island, and coast of the Arctic Sea. — Flowers yellow. Near C. 

 radicans, and by its creeping stem allied to C. natans. The latter hassmaller 

 leaves, white floAvers and oval anthers. — R. Br. 



5. C leptosepala (DC): stem 1-leaved or naked, mostly l-flowered ; 

 radical leaves on long petioles, ovate-cordate, obscurely crenate ; sepals 8-10, 

 oblong; pistils 8-15. — DC! syst. 1. p. 310. (v. s. in herb. Lamb.); 

 Hook. fl. Bor.-Am. 1. p. 22. t. 10. C. sagittata, Torr. ! in ann. lye. New- 

 York, 2. p. 164. (excl. syn.) 



North West America, and Rocky Mountains, south to lat. 40^ ! — A span 

 high. Scape? 1 -(rarely 2-) flowered, smaller than in C. palustris. Sepals Avhite. 

 Carpels 8-10, oblong. Styles none, or very short ; stigma obtuse, recurved. 



6. C bijlora (DC): stem with a single leaf, 2-flowered ; radical leaves 

 petioled, reniform, crenate, with a very broad sinus ; sepals oblong. DC. 

 syst. 1. p. 310 ; Hook. fl. Bor.-Am. 1. p. 22. 



North West America. — Sepals rather acute, broader and shorter than in 

 the preceding species. Carpels 3-16, acuminate with the style. DC — Per- 

 haps, as Hooker intimates, not distinct from C leptosepala. 



9. TROLLIUS. Linn.; DC. syst. 1. p. 311. 

 Sepals 5-10-15, deciduous, petaloid. Petals 5-20, small, 1-lipped, tubu- 



