338 Oeder if.— EOSACB^. 



§ Style straight, joiiitless, aTl of it poi-slstent. Sikversia Nos. 1, a 



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



a Head of fruits raised on a stipe. Fls. yellow or purple Nos. 8—5 



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



* — Flowers white No. 8 



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

 interruptedly pinnate, of numerous ouneate, iuoisely dentate, subequal Ifts. ; 

 bractkts 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 

 pail" of opposite, laciuiate Its. near the middle, and several hraots at the base of the 

 long, slender petioles. Eadioal Ivs. 5 to 6' long, the terminal 1ft. not enlarged. 

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



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

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

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

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

 5 dentate, lateral Ifta. 1 to i" long, and ending in a half round 1ft. 2 to 4' wide, 

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

 JJ., Aug. 



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

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

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

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

 Slf high, bearing a spreading panicle of large, yeUovv fls. 



4 G. vernum 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 loljed and dentate ; cauline Ivs. 3 to 5-foliate or lobed ; stip. largfe and 

 incised;^, yellow, erect, very small; sep. reflexed; 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 Eaf ) 



5 G rivale. L. Pubescent; st. subsimple; radical Ivs. lyrate ; 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. Ehizome woody, creeping. St. 1 to 2f high, paniculate at 

 top. Eoot Ivs. interruptedly pinnate, inclining to lyrato, 4 to 6' long', terminal 

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

 Bubsessile. PJs. subglobous. Cal-. purplish-brown. Petals broad-obcordate, 

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



6 G. strictum Ait. Hirsute; radical te. interruptedly pmnafc; cauline 3 to 5- 



foliato; Ifts. obovate and ovate, lobed and toothed; stip. large and erect; bract- 

 lets linear, shorter than the sep. ; pet. roundish, longer tlikn tho 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. Et. Ivs. 5 

 to 8' long, inchning to lyrate, the terminal 1ft. largest, obovate and lob'ed. Fla. 

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



7 G. maoroph^Uum 'Wllld. 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 ; recept. 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, temato or even rarely 

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

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

 brous ; reoep. densely hirsute.— Hedges and thickets. Can. and V. 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 lvs. 

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

 Jl. G. album Gmel.) 



