446 ORDER 70. COMPOSITE. 



1 R. nitida Nutt. Glabrous, shining, subsimple, Ivs. thick, lanceolate, acute, the 

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

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

 handsome herb. 3 to 5f high, in swampy thickets. Lvs. with prominent veins 

 and veinlets. Hds. on long naked peduncles. Rays 9 to 12, nearly 2' long. 

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



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

 ovate ; pappus crenate. In the edges of swamps and ditches, Can. and U. S. A 

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

 tinguished by its conical, at length ovate disk. St. round, branching, 6 to~$f 

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

 divided, toothed or cut, petiolate. Fls. large, terminal Rays H to 2' long, 

 oblanceolate, bright yellow, spreading or drooping. Aug. (R. Isevigata Ph.) 



3 R. subtomentosa Ph. St. branching, tomentous-pubescenl ; Ivs. petiolate, 

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

 lobed or 3-parted, upper undivided, ovate, acuminate ; hds. corymbous ; scales 

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

 bearded, shorter than the corollas. Prairies, &c., Western 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 Ivs. 

 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 r petiolato ; hds. rather small, disk dark purple; at length ovoid; 

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

 and W. States. A handsome species, 2 to 4f high, 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; Ivs. oblong, sessile or clasp- 

 ing; scales linear lanceolate, reflexed; rays 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. 

 large ; rays an inch long. Pappus almost none. Aug. Oct. 



6 R. Heliopsidis Torr. & Gr. Slightly downy ; Ivs. 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. arid Ala. Plant 

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

 Aug., Sept. 



7 R. hirta L. Tory hirsute or hispid ; st. simple or somewhat branched ; ped. 

 naked ; Ivs. ovate-spatulate, 3-veined, petiolate, mostly entire, the upper ones sessile. 

 ovate-lanceolate; invol scales numerous, narrow, imbricated in 3-rovvs; 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 large 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 : 

 Ivs. strigo us-pubescent, remotely ckntate, radical petiolate, ovate, o-veined, cauline 

 lance-oblong, tapering to the sessile, subclasping 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. speciosa Wonder. St. hispidly hirsute ; branches slender, elongated, naked 

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

 on long petioles, cauline ovate and lanceolate, 3-veined, upper sessile; scales 

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

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

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



