14 RANUNCULACE^. Hepatica. 



Canada! and Arctic America; west to the Oregon. Shore of Lake 

 Superior, Dr. PUchcr! Watertown, New-York, (var. Hudsoniana) Dr. 

 Craxoe ! Vermont, Dr. Bobbins ! Mr. Carey ! June. v. Plains of the 

 Platte and Valleys of the Rocky Mountains in lat. 42°, Nuttall .'—About a 

 loot high. Flower white, yellow, or purple, but mostly deep red. Head of 

 pericarps oval, very wooUy. — It is possible that the North American plant 

 may prove to be a distinct species from A. multifida of the Straits of Ma- 

 gellan. The single-flowered variety figured in Delessert, ic. 1. t. 17, is so 

 unlike the ordinary form, t. 16, that it can hardly belong to the same species. 



12. A. Pennsylvanica (Linn.): somewhat hairy; leaves 3-5-parted; seg- 

 ments oblong, incisely toothed at the apex; involucre and involucels similar, 

 24eaved, sessile ; sepals 5, obovate ; carpels hairy, compressed, margined, 

 with a nearly straight persistent style. — Pursh, ft. 2. p. 3S7; DC.prodr. 1. 

 J). 21; Hook. Jl. Bor.-Am. l.p. 8. t. 3. f. B. A. dichotoma, Linn, amcen. 

 acad. 1. p. 155 ; DC. prodr. I. c. ; Pursh ! Jl. I. c. A. aconitifolia, Michx. ! 

 fi. 1. p. 320. \ 



Banks of rivers, in rocky places, Canada ! to Pennsylvania ! and north to «!. 

 Arctic America. Michigan! Ohio! June- July. — About 18 inches high. 

 Radical leaves large, on long petioles. Flower an inch or more in diameter. 

 Sepals white, membranaceous. Style longer than the ripe carpels, and when 

 young, short and hooked. — We fully accord with Sir W. Hooker in uniting 

 A. Pennsylvanica and A. dichotoma. Siberian specimens of the latter are 

 taller and the flower smaller than in our plant, but in other respects there is 

 no dijQference. 



§ 5. Carpels without tails, much compressed, roundish-oval, glabrous : 

 pedicels several, umbelled, leajless, 1-Jlowered. — Omalocarpus, DC. 



13. A. narcissijlora (Linn.): villous; leaves palmately 3—5 parted; seg- 

 ments cuneiform, incisely many-cleft ; lobes linear, acute ; involucre some- 

 what similar, sessile, leaflets 3-5-cleft. — Willd. sp. 2. p. 1283 ; Pursh, fl. 2. 

 p. 387 ; DC. prodr. 1. p. 21 ; Hook. fl. Bor.-Am.. 1. p. 8. 



Canada (Pursh) and N. W. America '(Menzies) to Kotzebue's Sound. 

 Unalaschka, Fisher. — Plant clothed with long silky hairs. Flowers white. 



I Doubtful species. 



14. A. Walteri (Pursh) : root tuberous ; stem 1-flowered, naked ; leaves 

 palmate, on long petioles; sepals 5. Pursh, fl. 2. p. 387. Thalictrum Caro- 

 linianum, Walt. Car. p. 157. 



North Carolina, Walter. — Pursh found no specimen of this plant in 

 Walter's herbarium, and it is quite unknown to aU our botanists. 



15. A. pedata (Raf.) : stem short, 1-flowered ; leaves pedately 5-parted, 

 lobes laciniate; sepals 6. Raf. in jour. bot. l.p. 230; DC.prodr. l.p 22. 



New Jersey, Rafinesque. — Probably A. nemorosa. 



16. A. minima (DC.) : involucral leaves 3-parted ; lobes ovate, acuminate, 

 serrate towards the apex; sepals 5, oval-oblong, obtuse. DC. syst. l.p, 206. 



Alleghany Mountains in Virginia, P. de Beauvois. — Probably also a va- 

 riety of A. nemorosa. 



3. HEPATICA. Dill; DC. syst. l.p. 215. 



Involucre resembling a 3-sepalous calyx, very near the flower. Sepals pe- 

 taloid, 6-9, in 2 or 3 rows. Petals none. Achenia without tails. — Involucre 

 1-flowered. Leaves radical, entire or 3-lobed. 



