40 CKOWFOUT FAMILY. 



R. sceler^tus, Linn. Ct-ksed C. So called because the juice is very 

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

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



R. Pennsylvanicus, Linn. f. Buisry C. Bristly, hairy, coarse, and 

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

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

 style. Along streams. 



= = Pistils in glolmlar chisters. 

 II Petals small, not exceeding the sepals. 



R. recurvatus, Poir. Hook-stvi-kd 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 yelloio, much exceeding the sepals. (Bi;tti:uci;ps.) 



o Styles long and attenuate, stigmatose only at tip. 



R. fasciculdris, Muhl. Earlv 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, Poll'. Ckkkimno 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. 



/?. bu/bosus, Linn. BrLuons B. Stem about l°'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. acris, Linn. Tali, 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 last, 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. ripens, Linn. Creeping 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. twnn 

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



-(-■(- -1- Garden KANiTNCt'i.fSEs. Besides the double variety of P. 

 repens, the choice Double BaniDicKluses of the ^florist come from the 

 two following : — 



R. Asidticus, Linn., of the Levant ; with o-jiarted leaves and flowers 

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

 hardy N. 



R. aconitifbtius, 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. 

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

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



I. biternatum, Torr. & Gray. 0. to Minn, and S. Much like Anemo- 

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

 thickened here and there. 



