446 Ordkr 70— OOMPOSITjB. 



1 R. pftida Nutt. Glabrous, ahining, subsimple, Ivs. thick, lanceolate, acute, tha 

 lower subaerrulate, petiolate, upper sessile or clasping; hds. few or solitary, with 

 long, drooping rays ; pappris coroniform, lacerate at summit. — Ga., Fla., to La. A 

 handsome herb, 3 to 61' high, la swampy thickets. Lv3. with prominent veins 

 and veinlots. Hds. on long naked peduncles. Raya 9 to 12, nearly 2' long. 

 Disk dark purple, oblong-ovate or spicate in fruit Jn., Jl. 



2 R. laoiniata L. Glabrous ; lower Ivs. pinnate, segments 3-lobed, upper ones 

 ovate ; pappus cremate. — In the edges of swamps and ditches. Can. and U. S. A 

 tall, showy plant, resembling Heliauthus, from which, however, it is readily dis- 

 tinguislied by its conical, at length ovate disk. St. round, branching, G to 8f 

 liigh. Lvs. alternate, ample, rough, upper ones generally ovate, the rest variously 

 divided, toothed or cut, potiolate. Fls. large, terminal Eays 1-} to 2' long, 

 oblauceolate, bright yellow, spreading or drooping. Aug. (R. tovigata Ph.) 



3 R. subtomentosa Ph. St. branching, iomentous-puhescent ; lv.=. petiolate, 

 hispid-scabrous above, softly subtomentous beneath, serrate, the lower deeply 3- 

 iobed 01 3-parted, upper undivided, ovato, acuminate ; hds. corymbous ; scales 

 numerous, spreading; rays 10 to 15, spreading; disk at length globous; pedes 

 bearded, shorter than the coroUas. — Prairies, &o., 'W'estern and S. "W. States. St. 3 

 to 5f high, angular, marked with brown lines. Lvs. 3 to 5' long, on petioles 1 

 to 24" long. Rays orange yellow, about 1' long. Jl., Aug. 



4 R. triloba L. Hirsute; branches panicled spreading; lower cauline Iva. 

 mostly 3-lobed, coarsely serrate, acuminate ; upper ovate lanceolate somewhat 

 clasping, serrate or entire ; radical ones ovate or oval, obtuse, crenate-dentate or 

 incisely lobed, petiolate; hds. rather small, disk dark purple; at length ovoid; 

 rays 8, broad-oval, rather longer than the linear, reflexed scales. — Fields, Mid. 

 and TiV. States. A handsome species, 2 to 4f liigh, very branching. Lvs. 2 to 

 4' long, 3-veined., Rays deep yellow, 6 to 10" long, f as wide. Chaff cuspi- 

 date-awned at the summit. Aug., Sept. 



5 R. mollis Ell. Soft-woolly or tomentous all over; lvs. oblong, sessile or clasp- 

 ing; scales linear lanceolate, reflexed; raya 15 to 20, elongated; disk dark pur- 

 ple except the canescent pales. W. Ga. An interesting species, confined as yet 

 to a narrow limit Plant whitened with down, 2 to 3f high. Lvs. small, Hds. 

 largo ; rays an inch long. Pappus almost none. Aug. — Oct. ^ 



6 R. Heliopsidis Torr. & Gr. Slightly domny ; lvs. ovate or oval, 5- veined, 

 mostly obtuse, petiolate; scales obtuse, squarrous; rays 10 to 12 ; disk conical, 

 dark purple except the downy canescent pales. — Barrens, W. Ga. and Ala. Plant 



1 to 2f high. Lvs. 2 to 3' long, the lower on long petioles. Pappus scarcely any. 

 Aug., Sept 



7 R. Ilirta L. Very hirsute or hispid; st simple or somewhat branched; ped. 

 naked ; lvs. ovaie-spatulate, S-veined, petiolate, mostly entire, the upper ones sessile, 

 ovate-lanceolate; invol. scales numerous, narrow, imbricated in 3-rosvs; rays 

 spreading, oval ; pales bearded. — A showy plant in dry soils. Can. "W. to Fla., 

 rarely in N". Eng. Sts. subsimple or branching from the base, each branch leaf- 

 less towards the summit, and bearing a largo head with 12 to 15 bright yellow 

 rays. These are an inch long, and surround a broadly conical disk of dark brown 

 chaff and flowers, f Jl., Sept 



8 R. fiilgida Ait St hirsute with rigid hairs ; branches slender, naked above : 

 lvs. strigous-pubescent remotely dentate, radical petiolate, ovate, h-veined, caulino 

 lance-oblong, tapering to the sessile, subdasping base ; scales oblong, spreading, as 

 long as the spreading rays ; pales glabrous, linear-oblong, obtuse. — Mountains, 

 Penn. to Ohio and Ga. St. 1 to 3f high. Rays 12 to 14, scarcely longer than 

 the leafy involucre, deep orange-yellow. Jl. — Oct f (R. chrysomela Mx. R. 

 spatulata Ph.) ' 



9 R. speoiosa Wender. St hispidly hirsute ; branches slender, elongated, naked 

 above ; lvs. scabrous-pubescent, strongly dentate acuminate, radical ovate, 5-veined, 

 on long petioles, cauline ovato and lanceolate, 3-veined, upper sessile; Ecale« 

 lance-hnear, much shorter than the spreading rays ; pales linear-oblong, acute. — 

 Borders of woods. 111. (Jenney), Ohio to Penn. A largo and very showy species, 



2 to 4f high. Lvs. rather thin, radical, 4 to 5' by 3 to 4', tha teeth mucronulate ; 



