338 ORDER 47. ROSACES. 



Style straight, jointless, all of it persistent. SIKVEKSIA Noa. 1, 2 



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



a Head of fruits raised on a stipe. Fls. yellow or purple Nos. 3 5 



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



Flowers white No. 8 



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

 interruptedly pinnate, of numerous cuneate, incisely dentate, subequal Ifts. ; 

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

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

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

 long, slender petioles. Radical Ivs. 5 to 6' long, the terminal lit. not enlarged. 

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



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

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

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

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

 5 dentate, lateral His. 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. 

 JL, Aug. 



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

 lyrate-pinnate, the terminal Ift. very large, broadly remform-cordate, incised, the 

 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 largo, yellow fls. 



4 G. vermim 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; yfc. 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 

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



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

 fls. nodding, purple ; pet. as long as the erect cal. segm. ; 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 6' long, terminal 

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

 subsessile. Fls. 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. large 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. macrophyllum 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 the 

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

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



8 G. Virginianum L. Pubescent ; radical Ivs. pinnate, ternato or even rarely 

 simple, cauline 3 to 5-foliate or lobed, all unequally and incisely dentate, nearly 

 smooth or softly pubescent ; fls. erect ; petals not exceeding the calyx ; sty. gla- 

 brous ; recep. densely hirsute. Hedges and thickets, Can. and U. S. St. simple 

 or branched, smoothish above. Lvs. very variable in form, lower ones often 3- 

 foliate, with long (6 to 8') appendaged petioles. Stip. mostly incised. Upper Ivs. 

 simple, acute, sessile. Fls. rather small, white. Ped. in fruit long and diverging. 

 Jl. G. album Gmel.) 



