RANUNCULACEAB (CKOWFOOT FAMILY) 



897 



«• +♦ Leaves variously cleft or divided; achenes in globular or ovoid heads, com' 

 pressed, with an evident firm margin; hirsute or pubescent. 



= Achenes with long recurved beak ; root-leaves rarely divided. 



[y 19. R. recurvitus Poir. (Hooked C.) Hirsute, 3-6 dm. high ; leaves of 

 the root and stem nearly alike, long-petioled, deeply 3-oleft, large ; the lobes 

 broadly wedge-shaped, 2-3-cleft, cut and toothed toward the apex ; petals 

 shorter than the reflexed calyx, pale. — Woods, common. May, June. 



= = Style long and attenuate, stigmatose at the tip, persistent or the upper part 

 usually deciduous; early root-leaves only 3-parted, the later 3-5-/oliolate ; 

 petals bright yellow. 



20. E. fasciculHris Muhl. (Eaklt C.) Low, ascending, 1-2.5 dm. high, 

 ■ pubescent with close-pressed silky hairs ; root a cluster of thickened fleshy fibers ; 

 radical leaves appearing pinnate, the long-stalked 

 terminal division remote from the sessile lateral 

 ones, itself 3-5-divided or -parted and 3-5-cleft, the 

 lobes oblong or linear ; petals often 6 or 7, spatu- 

 late-oblong, twice the length of the spreading calyx ; 

 carpels scarcely margined, tipped with a slender 

 straight or rather curved beak. — Dry or moist 

 hills, e. Mass. to Out. and southw. Apr., May. 

 Fig. 726. 



21. R. septentrion&lis Poir. (Swamp B.) Usu- 

 ally villous ; stems 3-8 dm. long, erect, ascending, 

 or in wet ground some of them pro- 

 cumbent or forming long runners; \ 

 lower petioles very long ; leaves 3-di- JL^ 

 vided, the divisions all stalked (or at ^k 

 least the terminal one), broadly wedge-shaped or ovate, unequally ^pF 

 3-cleft or parted and variously cut ; petals broadly obovate, much 



larger than the spreading calyx ; mature 121. E. septen- 

 carpels 3-3.4 mm. broad, strongly margined, trionalis. 

 pointed by a stout straightish beak. — Moist Carpel x4%. 

 or shady places, etc., May-Aug. Pig. 727. 

 i^ 22. R. hispidus Michx. Root a cluster of stout fibers ; 

 stem 1.5-4: dm. high, flexuous, not repent, biisvite or smooth- 

 ish ; leaves 3-divided or the basal only 3-lobed ; divisions 

 or lobes variously cleft, teeth mostly acutish ; petals oblong, 

 bright yellow, much exceeding the spreading sepals; 

 green, obscurely margined, 



B. fasclcularis. 

 Base of plant x %. 



728. E. hispidus. 

 Flower x y^. 

 Carpel x i%. 



mature achenes 



2-2.6 mm. broad, tipped with a rather slender 

 beak. — Moist places, chiefly in upland woods, 

 Vt., southw. and westw. P"ig. 728. — A 

 smoothish form occurs. 



= = = Style short, recurved, stigmatose 

 along the inner margin, mostly persistent. 



23. R. rSpens L. (Creeping B.) Creep- 

 ing, in habit and foliage closely similar to the 

 last two species; leaves frequently white- 

 variegated or spotted; flowers 2-2.6 cm. 

 broad; sepals not reflexed in anthesis. — In 

 low grounds ; generally in ditches and along 

 wrater courses, near the coast and probably 

 introduced from Europe, but indigenous 

 westw. Fig. 729. 



24. R. pAkvulus L. Hirsute, not creep- 

 ing, similar to but much 'smaller than the 

 preceding; leaves rarely over 3 cm. broad; 



729. E. repens. 



Base of plant X '/a. Flower X V^. 



Carpel x 4^. 



