40 CROWFOOT FAMILY. 



R. sceler^tus, Linn. Cursed C. So called because the juice is very 

 acrid and blistering ; very smooth ; stem thick and hollow; root-leaves 3- 

 lobed ; styles very sliort, straight. In water or very wet places. 



R. Pennaylv^nicus, Linn. f. Bristly C. Bristly, hairy, coarse, and 

 stout, 2°-3'^ high ; leaves all 3-divided ; the divisions stalked, again 3- 

 cleft, sharply cut and toothed ; akenes tipped with a short straight 

 style. Along streams. 



= = Pistils in globular clusters. 



II Petals small, not exceeding the sepals. 



R. recurvitus, Poir. Hook-styled C. Hairy, l°-2° high ; leaves all 

 3-cleft and long-petioled, with broad, wedge-shaped, 2-3-lobed divisions ; 

 akenes with long recurved styles. Woods. 



II II Petals large, bright yellow, much exceeding the sepals. (Buttercups.) 



o Styles long and attenuate, stigmatose only at tip. 



R. fascicul^ris, Muhl. Early B. Low, about 6' high, without run- 

 ners ; roots thickened ; root-leaves much divided, somewhat pinnate ; 

 petals rather narrow and distant ; akenes scarcely edged, slender- 

 beaked. On rocky hills in early spring. 



R. septentrionalis, Poir. Cueepin'g B. Everywhere common in very 

 wet or moist places, flowering in spring and summer ; variable ; stem 

 soon ascending, sending out some prostrate stems or runners in summer ; 

 leaves more coarsely divided and cleft than those of the last ; petals 

 obovate ; akenes sharp-edged and stout-beaked. 



R. bu/bdsus, Linn. Bulbous B. Stem about 1° high from a solid bul- 

 bous base nearly as large as a hickory nut ; peduncles grooved ; calyx 

 reflexed when the very bright yellow and showy large corolla expands in 

 late spring. Abundant only in E. New Eng. ; rare W. 



R. dcris, Linn. Tall B. Stem 2°-3° high, no bulbous base ; pedun- 

 cles round, not grooved ; calyx only spreading when the lighter yellow 

 corolla expands in summer. Commoner than the la.st, except E. A full 

 double-flowered variety is cult, in gardens, forming golden-yellow balls 

 or buttons. 



o o Styles awl-shaped, stigmatose along the inner edge. 



R. r&pens, Linn. Creepinc B. In habit and foliage like R. septen- 

 trionalis ; leaves frequently white-variegated or spotted ; calyx spreading, 

 peduncles grooved. In low grounds, E. where it is probably nat. from 

 Eu. ; native W. A full double form in gardens. 



-1- -1- -4- Garden Ranunculuses. Besides the double variety of E. 

 repens, the choice Do^ible Ranunculuses of the florist come from the 

 two following : — 



R. Asidticus, Linn., of the Levant; with 3-parted leaves and flowers 

 nearly 2' broad, resembling Anemones, yellow, or of various colors. Not 

 hardy N. 



/?. aconitifdiius, Linn., of Eu., taller, smooth, with 5-parted leaves, and 

 smaller white flowers, the full double called Fair Maids of France. 



10. ISOPYRUM. (Greek: ancient name of a Fumaria.) Sepals petal- 

 like, deciduous ; stamens 10-40 ; pistils 3-6 ; pods 2-several-seeded. 

 ^ Slender and smooth, with 2-3-ternately compound leaves, the leaf- 

 lets 2-3-lobed. Flowers axillary and terminal. (Lessons, Fig. 292.) 



I. bitern^tum, Torr. & Gray. O. to Mhm. and S. Much like Anemo- 

 nella in general appearance, but the roots are fibrous, and tuberous- 

 thickened here and there. 



