ORDER LXVIII. COMPOSITE. 353 



7. V. altis'sima, (Nutt.) Stem erect, glabrous. Leaven lanceolate, 

 serrate, slightly scabrous. Flowers in small, terminal corymbs; invo- 

 lucre small, with ovate, ciliate, appressed scales, slightly mucronate. 

 Seeds striate. — Purple. If. Aug. — Oct. Geo. Damp places. 6 — 10 

 feet. V. fasciculata, Mich. 



8. V. ovalifo'lia, (T. & G.) Stem simple, pubescent. Leaves oval, 

 acute, serrate, glabrous ; heads numerous, about 20-flo\vered ; scales 

 of the involucre ovate, appressed. Achenia a little hairy ; pappus 

 purple. — Purple. %. Middle Florida, 3 — 4 feet. 



Genus II— STOKE'SIA. UHer. 

 (In honor of John Stokes.) 



Involucre leafy, imbricate. Corolla radiate. Florets of the 

 ray funnel-form, irregular, all perfect. Receptacle naked ; pap- 

 pus consisting of 4 bristles. Achenia 4-sided, glabrous. 



1. S. cya'nea, (L'Her.) Stem herbaceous, leafy. Leaves lanceolate. 

 Flowers solitary, large, ornamental ; florets all perfect. — Blue or purple. 

 11. May. Carolina and Georgia. 



Genus III— ELEPHANTO'PUS. L. 



(From elep7iaa, an elephant, and poics, a foot, from the shape of the leaf of some 



species.) 



Involucre 4-flowered ; florets all ligulate, perfect. Pappus 

 bristly, consisting of 5 awns. Receptacle naked. Achenia 

 hairy. 



1. E. Carolinia'nus, (Willd.) Stem leafy, erect, terete, branching 

 toward the summit, villous. Leaves oblong, attenuate at the base, 

 hairy, slightly scabrous. Flowers iu sessile, terminal clusters, with 3 

 unequal cordate bracts at the base of each capitulum; involucre 9 — 10- 

 leaved, the interior longest, hairy on the outside. Corolla ligulate at 

 the summit, tubular toward the base, 4-cleft. Seed oblong. — Purple. 

 If. July — Sept. Common. 



2. E. nudicau'lis, (Ell.) Stem erect, branching toward the summit, 

 scabrous and hispid, usually purple, generally destitute of leaves ; rad- 

 ical leaves large, oval-lanceolate, serrate, scabrous on the upper surface 

 and villous beneath ; bracts tomentose ; involucre with rigid leaves. — 

 Purple. U • Aug. — Sept. Common. E. tomentosus, L. 



Tribe IL— EUPATORIA'CE^E. 



Flowers discoid. Style divided ; branches elongated, obtuse, 

 or clavate, papillose externally toward the summit. Corolla 

 regular, 5-cleft, blue or purple, seldom white. 



Genus IV.— CCELESTI'NA. 

 (From coelestis, heavenly, in allusion to its blue color.) 



Heads many-flowered, homogamous. Involucre cylindrical, 

 hemispherical, many-leaved, sub-imbricate. Receptacle cot vex. 



