RANUNCULACEAE (CROWFOOT FAMILY) 



397 



** -w- 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. 



19. R. recurvatus Poir. (HOOKED C.) Hirsute, 3-6 dm. high ; leaves of 

 the root and stem nearly alike, long-petioled, deeply 3-cleft, 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-foliolate ; 

 petals bright yellow. 



20. R. fascicularis Muhl. (EARLY 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, lipped with a slender 

 straight or rather . curved beak. Dry or moist 

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

 FIG. 726. 



21. R. septentrionalis 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 ^3 



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



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

 larger than the spreading calyx; mature 

 carpels 3-3.4 mm. broad, strongly margined, 

 pointed by a stout straightish beak. Moist 

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



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

 stem 1.5-4 dm. high, flexuous, not repent, hirsute 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, 



726. K. fascicularis. 

 Base of plant x %. 



727. R. septen- 

 trionalis. 

 Carpel x 4%. 



728. R. hispidus. 

 Flower x B / 7 . 

 Carpel x 4V 2 . 



mature achenes 



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

 beak. Moist places, chiefly in upland woods, 

 Vt., southw. and westw. FIG. 728. A 

 smooth ish form occurs. 



== = == Style short, recurved, stigmatose 

 along the inner margin, mostly persistent. 



23. R. rdpens 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 

 water courses, near the coast and probably 

 introduced from Europe, but indigenous 

 westw. FIG. 729. 



'24. R. PARVULUS L. Hirsute, not creep- 

 ing, similar to but much smaller than the 

 preceding; leaves rarely over 3 cm. broad; 



729. R. repens. 



Base of plant x %. Flower X VT- 

 Carpel x 4^. 



