ORDER LXVIII. — COMPOSITOR. 887 



what foliaceous; ray florets 12 — 14, 2-cleft ; pappus, a slight margin. 

 Ch a ff glabrous. — Yellow. Aug. — Oct. Mountains. 2 — 3 feet 



8. R. trilo'ba, (L.) Stem hairy, hispid, paniculately branched, branch- 

 es leafy, divaricate. Leaven lanceolate, acuminate at each end, serrate, 

 the lower ones 3-lobed, hairy, upper ones lanceolate, serrate, sessile. 

 Flowers numerous at the extremities of the branches ; involucre with 

 reflexed leaves ; ray florets lanceolate, reflexed, about 8 ; pappus a 

 4-toothed margin. — Yellow. l[. Aug. — Sept. Dry soils. 4 — 5 feet. 



4. R. mol'lis, (Ell.) Stem erect, branching, covered with a hispid 

 pubescence. Leaves alternate, ovate-lanceolate, sessile, dentate, slight- 

 ly cordate, pubescent. Flowers at the extremities of the branches ; in- 

 volucre hairy, with reflexed leaves; ray florets 12 — 20 ; pappus nearly 

 wanting. — Yellow. %. Aug. — Oct. Western Geo. 2 — 3 feet. 



5. R. heliopsi'dis, (T. & G.) Stem erect, simple, somewhat pubes- 

 cent, few branches at the summit. Leaves ovate or oval, slightly ser- 

 rate, 5-nerved, glabrous, or slightly pubescent; involucre minutely pu- 

 bescent, scales somewhat spatulate. Florets of the disk brownish-purple. 

 Achenia of the rays 3-angled, of the disk 4-angled. — Pale yellow. In 

 wet places. Ala. and Geo. Aug. — Sept. 1 — 2 feet. 



6. R. digita'ta, (L.) Stem erect, glabrous, branching, lower leaves 

 pinnate, with pinnatifid segments; the upper ones simple, pinnate, the 

 highest 3-cleft. Involucre shorter than the disk, somewhat pubescent, 

 with ovate-lanceolate leaves. Pappus a 4-toothed margin. Chaff to- 

 mentose at the summit. — Yellow. %. August — Oct. Mountains. 

 5—8 feet. 



7. R. lacinia'ta, (L.) Stem erect, glabrous, branching. Leaves sca- 

 brous, the lower ones pinnate, with 3-lobed segments, coarsely toothed, 

 sometimes laciniate, upper leaves nearly sessile, ovate or 3-cleft, some- 

 times dentate. Flowers in terminal punicles ; involucre shorter than 

 the disk, with small ovate- lanceolate leaves; ray florets abo ;t 6, dila- 

 ted at the summit, 3-toothed ; pappus a crenate margin ; chaff tomen- 

 tose. — Yellow. 2£. Aug. — Sept. In moist places. Middle Georgia. 

 4—6 feet. 



8. R. heterophyl'la, (T. <fc G.) Stem erect, cinerous-pubescent. 

 Leaves 3 — 5-parted, the terminal divisions cuneiform, and mostly 3 cleft, 

 upper leaves simple, ovate, serrate. Achenia prismatic. — Mid. Flor. 



9. R. nit'ioa, (Nutt.) Stem erect, simple, glabrous. Leaves oval ob- 

 long and lanceolate, coriaceous, often toothed ; lower leaves petiolate, 

 upper clasping. Heads large, showy. — Geo. and Flor. 3 — 5 feet. 



10. R. l^eviga'ta, (Pursh.) Stem glabrous. Leaves ovate-lanceolate, 

 somewhat coriaceous, shining. Radical leaves ovate-spatulate, dentate. 

 Flowers on long, naked peduncles ; involucre with long lanceolate 

 leaves; ray florets rather short. — Pale yellow. U- July — Aug. 

 Pine-barrens. 2 — 3 feet. 



11. R. disco'lor. (Pursh.) Stem pubescent, branching. Leaves alter- 

 nate, sessile, strigose, pubescent, lanceolate, entire, or finely denticulate. 

 Flowers terminal ; involucre somewhat pubescent ; ray florets 12 — 14, 

 hairy on the outer surface ; pappus a minute margin ; chaff purple, 

 fringed at the summit. — Yellow. If. Aug. — Sept. Middle and west 

 ern Georgia. 2 — 3 feet. 



12. R. spathula'ta, (Mich.) Stem pubescent, slender. Leaves entire, 

 obovate-spatulate. Flovxrs solitary, terminal ; involucre imbricate, 



