338 OBDER 47. ROSACES. 



I Stylo straight, jointless, all of it persistent. SIEVEKSIA. Nos. 1, f, 

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



a Head of fruits raised on :. stipe, i'ls. yellow or purple Xos. 4 3 



a liead of fruits sessilo (no stipe). Vis. yi-llow Nos. 6, T 



Flowers white Nos. 8, S> 



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

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

 Iractlets 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 G' long, the terminal 111. 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 Ift. very la.-ge, 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. I to 4" long, and ending in a half round lit. 2 to 4' wido, 

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

 JJ., Aug. Perhaps a variety of the next. 



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

 lyrate-piunate, the terminal Ift. very lanje, broadly reniform-cordale, incised, tho 

 lateral ones very small ; st. Ivs. sossile, cleft and toothed ; petals obcordat^ ; sty. 

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

 if high, bearing a spreading pauiclo of largo, yellow 11s. 



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

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

 incisely lobed an<^ denfr.itD ; cauliuo Ivs. 3 to 5-foliato or lobed ; stip. largo and 

 incised ; ,/Zs. yellow, erect, very small- sep. rfflexed; head of carpels glo'Oous, 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 moro than 1" in length. Stipe of tho head of carpels 

 J' long. Apr.Jn. (Stylipus vcrnus Raf.) 



5 G rivale. L. Pubescent; st. pubsimple; radical Ivs. lyratc; slip, ovate, acute; 

 Jls. nodding, purple; pet. as long as the erect cal. segm. ; upper joint of t!io persis- 

 tent style plumous. A fine plai.t, conspicuous among tho 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-foliatc or lobed, 

 fiubsessilc. F)s. subglobous. Cal. purplish-brown. Petals broad-obcordate, 

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



G. strictum Ait. Hirsute; radical lis. interruptedly pinnate; caulinc 3 to 5- 

 fbliate; lies, obovate and ovate, lobed and toothed; slip, largo and civet ; bract- 

 lets linear, shorter than tho sep.; pet. roundish, longer tiiau tho cal.; f-ty. smooth, 

 Upper joint hairy. Fields, moist or dry, N. States and Brit. Am. Lt. 1: spid at 

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

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

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



f G. macrophyllum Wilid. Hispid; radical Ivs. interruptedly lyraie-pinnak; 

 the terminal Ift. much the largest, roundish-coruat?, cuuliue with minute lateral Ifts., 

 and a large, roundish, terminal one, all unequally derilato ; petals longer t. an tho 

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

 etout, very hispid and leafy. Terminal lit. 3 to 5' diam. Fls. yellow. Jn., JL 



8 G. album Gmel. Smoothish or pubescent; root-Ira, tomato or the vory lowest 

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

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

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



9 G. Virginianum L. Ilirsuie with spreading hairs, stout; Ivs. pinn-ite below, 

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

 acute, cut-dentate, upper lanceolate; petals shorter tliau iho calyx; torus nearly 



'naked. Wet thickets. 2 3f. July. 



