18 RANUNCULACEiE. Ranunculus. 



9. R. affinis (R. Brown) : radical leaves petioled, pedately multifid ; 

 canline ones subsessile, digitate, with linear lobes ; stern erect, few-flowered 

 and, with the calyx and ovaries, pubescent ; carpels with a recurved beak, 

 disposed in oblong-cylindrical heads. R. Br. in Parrifs \sl voy. ajrp. p. 

 265; Hook.Jl. Hor-Am. I. p. 12. 



a. petals twice as long as the calyx. Hook. I. c. t. 6. A. — R. affinis, R. Br. 

 I. c; Richards, in Frankl. l.s^ jour. app. cd. 2. p. 23 ; Hook, in Parry's 

 2nd voy. app. p. 384. R. arcticus, Richards. I. c. ed. 1. 



/?. petals a little shorter than the calyx, or none ; lower leaves more or less 

 divided. Hook. I. c. i. 6. A. b. 



y. the exterior radical leaves suborbicular, undivided. Hook. I. c. 



Canada to the Arctic Sea, and from long. 95° to the western declivity of 

 the Rocky Mountains. Kotzebue's Sound, Hook. P. & y. Melville Is- 

 land and shore of the Arctic Sea, Hook. — Very near R. auricomus. Broun. 



10. R. ovalis (Hook.) : pubescent ; radical leaves oval, cordate or truncate 

 at the base, undivided, rarely crenately 3-lobed ; cauline ones subsessile, 

 digitate, Avith the lobes all linear ; stem erect, many-flowered ; calyx pubes- 

 cent as lono- as the corolla ; heads of carpels globose. Hook.fi. Bor.-Ain. 1. 

 p. 13. t. Q.f. B ; Raf. in Desv.jour. hot. 2. p. 268 ? ; DC. prodr. 1. p. 43 1 



Rocky Mountains, lat. 52°, and about Carlton House.— Root fasciculately ' 

 fibrous. Radical leaves crenate, undivided, trifid, or pedately palmate. Se- 

 pals spreading, at length reflexed. Petals oval. Carpels as in R. affinis. 



11. R. hrevicaulis (Hook.): pubescent; radical leaves all undiAaded, 

 cordate-oval, crenate, cauline ones palmately many-cleft ; stem much shorter 

 than the leaves, erect, many-flowered ; heads of carpels globose ; petals 6. 

 Hook.fi. Bor.-Am. I. p. 13. t. 7. A. 



Shores of Lake Huron, Drummond; Fort Gratiot, St. Clair River, Dr. 

 Pitcher .'—Plant 2-6 inches high. Leaves on long petioles, large in proportion 

 to the size of the plant. Flower about half an inch in diameter.— Probably 

 only a variety of the preceding species. 



12. R. rhomboideus (Goldie) : hirsutely pubescent; radical leaves ovate- 

 rhomboid, undivided, serrate (or crenate), cauline ones palmate, floral ones 

 deeply laciniate ; sepals spreading, pilose; head of carpels globose, glabrous, 

 with an extremely short heak.— Goldie, in Edinb. phil.jour. G. p. 329. t. 11. 

 /. 1 ; Hook. ft. Bor.-Am. 1. p. 12. 



Canada, 'Goldie, Denke! Near Montreal, Dr. Holmes .'Stem 3-6 

 inches high, branching above. Radical leaves orbicular-ovate, rhomboidal or 

 obovate-cuneiform. Petals 5, oblong-obovate, longer than the sepals. 



13. R. cardiophyllns (Hook.) : hirsutely pubescent ; radical leaves round- 

 cordate, with the base rather deeply emarginate, undivided or many-cleft ; 

 cauline ones palmately many-cleft ; the lobes linear, incisely crenate ; petals 

 broadly oval, very obl:use, twice as long as the spreading sepals ; head of 

 carpels oblong.— //oo/f. fi. Bor.-Am. 1. p. 14. t. 5./. B; Nutt. in jour. acad. 

 Phi lad. l.p'.S. 



Canada to lat. 55°; Rocky Mountains, Drummond; Flat-Head River, 

 N. W. America, Mr. Wyeth.— Stem 1 foot high, robust. Stem-leaves nearly 

 sessile. Carpels numerous, roundish, small, terminated Avith a minute ra- 

 ther long hooked style. Flowers golden yelloAV, as large as in R. bulbosus. 

 Hook.— This and the four preceding species are nearly allied, and aU of 

 Ihera, Avith the exception of R. rhomboideus, may be, as Hooker suspects, 

 only varieties of R. auricomus. They all have fibrose-fasciculate roots. 



14./?. micranthus (Nutt.! mss.) : "hairy, dAvarf, (small-flowered); 

 leaves petiolate, somcAvhat rhombic-OA'ate, crenate, some of ihem 3-parted or 

 3-cleft ; cauline ones subsessile, Avith 3 to 5 linear-oblong divisions; sepals 

 AA'ith a bj-oid membranaceous border, as long as the corolla. 



