446 Oeder VO.— OOMPOSITjE. 



1 R. xrftida Nutt. Glabrous, shining, subsimpie, Ivs. thMc, lammMe,. acute, the 

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

 long, drooping rays ; pappus eoroniform, lacerate. %t summit, — Ga., Ma., to La. A 

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

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

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



2 R. laoiniata L. Glabrous ; lower lvs. 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 8f 

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

 divided, toothed or cut, petiolate. Fls. large, terminal. Eays IJ to 2' long, 

 oblanoeolate, bright yellow, spreading or drooping. Aug. (E. lasvigata Ph.) 



3 R. subtomentdsa Ph. St branching, iomentous-pubesceni ; lvs. 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 

 iearded, 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. Eays orange yellow, about 1' long. Jl., Aug. 



4 E. triloba L. Hirsute ; branches panicled spreading ; lower cauline Ivfl. 

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

 clasping, serrate or entire ; radical ones ovate or oval, obtuse, orenate-deutate or 

 incisely lobed, petiolate ; hds. rather small, disic da/iie 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. Eays deep yellow, 6 to 10" long, f as wide. Chaff cuspi- 

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



5 R. mollis Ell. Softrwoolly or iomentous all over; lvs. oblong, sessHe or clasp- 

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

 ple except the canesoent 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 ; lvs. ovate or oval 5-veined, 

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

 dark purple except the downy canesoent 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. hirta L. Tery hu-sate or hispid ; st. simple or somewhat branched ; ped. 

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

 ovate-lanceolate; invoL scales numerous, narrow, imbricated in 3-rows; rays 

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

 rarely in N. Eng. Sts. subsimpie 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. fdlgida Ait. St. hirsute with rigid hairs ; branches slender, naked above ; 

 lvs. strigous-puboscent, remotely dentate, radical petiolate, ovate, 5-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 Sfhigh., Rays 12 to 14, scarcely Ibnger'than 

 the leafy involucre, deep orange-yellow. Jl. — Oct. f (R. chrysomelaMx. E. 

 spatulata Ph.) 



9 R. specidsa Vender. St. hiapidly hirsute ; branches slender, elongated, naked 

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

 on long petioles, cauline ovate and lanceolate, 3-v6ined, 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 veiy showy species, 



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



