1424 CARDUACEAE 
1. R. lac iis ta L. Stem 6-20 dm. tall, glabrous or nearly so: blades of the 
upper leaves less deeply "lobed than those of the lower, or merely cleft: bracts 
of the involuere elliptic to lanceolate: ee 
the ray 2-4 long: disk becoming 
o 
puse or jud nie.—Rich woods, thick 
ets, and meadows, various p N. 
to La., Man., and Que.—Sum — Cult. 
in several fn. —A full delle ge is 
on in cultivation under the name 
Golden. glow. 
heterophylla T. & G. Stem 4-16 dm 
e 
leaves coarsely toothed, or lobed: bracts of | 
the involucre eee to bu tee -lanceolate: | 
ligules of the ray 1-2.5 em. long: disk sub- | VII: 
globose ce od. p damp places, V" 
Fla.- 
3. R. subtomentosa Pursh. Ste 5 dm. tall, cinereous- e blades 
of the uL leaves mostly undivided: poe of the involucre linear or nearly 
SO: rien of the ray 2-3 em. long: disk hemispheric to ovoid -eonie.— Dry soil 
and low grounds, various end Tenn. to Miss., Tex., Kans., Ia., and Ill.— 
Sum.-fall. 
4. R. Heliopsidis T. & G. Stem 8—7 dm. eo ees or eee puede 
e. blades elliptie-ovate to ovate-lanceolate, 3—1 Ong; errate: braets of 
he involuere elliptic to pus pp eee ligul ae F ray 15-2. em. long: 
disk $ ubglobose, about 1 em. in diameter me ind nearly obsolete. Woods and 
low grounds, Piedmont to DATED Plateau, Ga. and Ala.—Sum.-fall. 
R. alismaefolia T. & G. E 5-9 dm. tall hispidulous or scabrous 
above: leaf- edd dud or elliptic, 5-12 em. long, repand-dentieulate to ree 
entire: bracts of t ped linear to bed c: ligules of the ray 3—4 e 
long: disk s Eden E 0-2 cm. in diam : pappus prominent.—Pine mod: 
and prairies, Coastal Plain nnd dn pr add "La. to Tex. and Ark.—Sum.-fall. 
R. grandiflora C. G. Gmel. Stem scabrous or hispid throughout: leaf- 
blades ovate-elliptic to lanceolate, 6—15 e o bred shallowly Winds 
bracts of the involucre linear: ligules of the ra . long: disk ovoid or 
ovoid- -globose, 1.5-2.5 em. in diameter: pa D. Prominent Dry Mee 
Coas tal Plain and acy: provinces, La. to Tex. and Mo.—Sum 
Ell. Stem 3- = dm. ee gray-hirsute: leaf-blades oe 
spatulate to hare tae 1.5-6 em. long, crenate or nearly entire: s of the 
involuere linear to Pon buco ligules of the ray 2-3. long: disk 
hemispheric, 1. Pu m. in diameter: pappus wanting. —Pinclands £ and dry soil, 
Coastal Plain, Fla., ps E Ga.—Spr.—sum.—Little kno 
8. R. maxima Nutt. Stem 9-30 dm. tall, glaucous: leaf-blades elliptic, oval, 
tate 
r ovate, metimes pa e, , dentate or repand- 
braets of the involuere linear to linear-lanceolate: ligules of the ray 1.5 em. 
long: disk ellipsoid to ded -eylindrie, 3—4.5 cm. long: pappus dui NE 
Moist soil, various provinces, La. to Tex., Okla., and Mo.—Spr.-sum 
9. R.nitida Nutt. pue 6-12 dm. tall, glabrous: leaf-blades AA -spatulate 
to lanceolate-elliptic, 8-15 em. long, nearly entire to repand-dentate: bracts of 
the involuere linear to me lucent. disk ae to conic- cylindric, 3-4.5 
