338 OBDEB 47. ROSACES. 



Stylo straight, jointless, all ofit persistent. SIEVEESIA. Nos. 1, 3 



Stylo bent and jointed in the middle, hooked or plumose-, (a) 



a Head of fruits raised on a stipe. Fls. yellow or purple Nos. 4 5 



a Head of fruits sessile (no stipe). Fls. yellow Nos. 6, 7 



Flowers white Nos. 8, 9 



1 G. triflortirn Pursh. Villous ; st. erect, about 3-flowered; Ivs. mostly radical, 

 interruptedly pinnate, of numerous cuneatc, iucisely deutato, subequal Ifts. ; 

 bractlets linear, longer than the sepals ; sty. plumoua, very long in fruit. Brit. 

 Am. and N. W. States, rare in the Northern. Sts. scarcely a foot high, with a 

 pair of opposite, laciniate Ivs. near the middle, and several bracts at the base of tho 

 long, slender petioles. Radical Ivs. 5 to G' long, the terminal 1ft. not enlarged. 

 Fls. rather large, purplish white. Sty. 2' long in fruit. May, Jn. 



2 G. Peckii Pursh. Nearly glabrous ; st. erect, several-flowered, nearly naked ; 

 radical Ivs. lyrate-pinnate ; the terminal If I. very large, truncate at base, the lateral 

 ones minute ; pet. obovate, much longer than the cal. "White Mts. Scape 9 to 

 15' high, with several small, incised bracts. Petioles 3 to 5' long, bearing 4 or 

 5 dentate, lateral Ifts. 1 to 4" long, and ending in a half round lit. 2 to 4' wide, 

 lobed and dentate. Fls. 8'' diam., yellow, terminal on the elongated branches. 

 J]., Aug. Perhaps a variety of the next. 



3 G. radiatum MX. Tory hairy, hispid; st. leafy, 5 to 10-flowered ; rt. Ivs. 

 lyrate-pinnate, the terminal If 1. very large, broadly reniform-cordate, incised, tho 

 lateral ones very small ; st. Ivs. sessile, cleft and toothed ; petals obcordate, ; sty. 

 persistent, much longer than cal. in fruit. Roan Mt. N. Car. (Curtis). Sts. 1 to 

 2f high, bearing a spreading panicle of large, yellow fls. 



4 G. verntim Torr. & Gr. Slender and slightly pubescent ; st. ascending at base ; 

 radical Ivs. pinnately 5 to 9-fbliate, with incised Ifts. or often simple and cordate, 

 incisely lobed and dentate ; cauline Ivs. 3 to 5 -foliate or lobed ; stip. large and 

 incised j fls. yellow, erect, very small; sep. reftexed; head of carpels globous, raised 

 on a slender stipe. Shades and thickets, Ohio to 111. and Tex. St. 8 to 20' high, 

 striate, di- or trichomotous at top, few- leaved and few-flowered. Petals yellow 

 and with the sepals hardly more than 1" in length. Stipe of the head of carpels 

 i' long. Apr. Jn. (Stylipus vernus Raf.) 



5 G rivale. L. Pubescent ; st. subsimple ; radical Ivs. lyrate ; stip. ovate, acute ; 

 fls. nodding, purple; pet. as long as the erect cal. scgm. ; upper joint of the persis- 

 tent style plumous. A fine plant, conspicuous among the grass in wet meadows 

 N. and M. States. Rhizome woody, creeping. St. 1 to 2f high, paniculate at 

 top. Root Ivs. interruptedly pinnate, inclining to lyrate, 4 to G' long, terminal 

 1ft. large, roundish, lobed and crenate-dentate. St. Ivs. 1 to 3, 3-foliate or lobed, 

 subsessile. FJs. subglobous. Cal. purplish-brown. Petals broad-obcordate, 

 clawed, purplish-yellow, veined. Jn. The root is aromatic and astringent. 



6 G. strictum Ait. Hirsute ; radical Ivs. interruptedly pinnate ; cauline 3 to 5- 

 foliate; Ifts. obovate and ovate, lobed and toothed; stip. largo and erect; bract- 

 lets linear, shorter than the sep.; pet. roundish, longer than the cal. ; sty. smooth, 

 upper joint hairy. Fields, moist or dry, N. States and Brit. Am. St. hispid at 

 base, 2 to 3f high, dichotomous, and with spreading hairs at summit. Rt. Ivs. 5 

 to 8' long, inclining to lyrate, the terminal 1ft. largest, obovate and lobed. Fls. 

 numerous, rather large, yellow. Receptacle densely pubescent. Jl., Aug. 



7 G. macrophylltim "Willd. Hispid; radical Ivs. interruptedly lyrate-pinnate, 

 the terminal Ift. much the largest, roundish-cordate, cauline with minute lateral Ifts., 

 and a large, roundish, terminal one, all unequally dentate ; petals longer than tho 

 calyx ; recept. nearly smooth. White Mts. and Brit. Am. St. 1 to 2f high, 

 stout, very hispid and leafy. Termiaal 1ft. 3 to 5' diam. Fls. yellow. Ju., JL 



8 G. album Gmel. Smoothish or pubescent; root-lvs. ternate or the very lowest 

 simple; upper Ivs. simple; Ifts. ovate, lobed and toothed, the lower mostly 

 obtuse, upper lanceolate ; petals as long as calyx ; torus clothed with white 

 bristles. Thickets, com. 2 3f. Jl. (G. Virgmianuni T. & G.) 



9 G. Virgiiiiamim L. Hirsute with spreading hairs, stout ; Ivs. pinnate below, 

 then ternate, the upper simple; Ifts. incisely lobed, lobes wedge-lanceolate, very 

 acute, cut-dentate, upper lanceolate ; petals shorter than tho calyx ; torus nearly 

 naked. Wet thickets. 2 3f. July. 



