358 0KD15R LXVIII. OOMPOSITJ-:. 



elongated ; pappus setaceous, pale purple, persistent. Flowers 

 pale purple. Herbaceous plant, with opposite, 3-nerved leaves 

 and corymbose heads. 



1. B. cordifo'lia, (Ell.) Stem simple, pubescent, corymbose at the 

 summit. Leaves opposite, cordate, dentate, finely pubescent ; branches 

 of the style much exserted. — Pale purple. 2f. Western Geo. and 

 Florida. 3 feet. 



Genus XL— EUPATO'RIUM. Tourn. 

 (From Eupator, King of Pontus.) 



Involucre cyHndrical, imbricate, campanulate, scales. Florets 

 all perfect, tubular, 5-toothed. Style long, deeply cleft. Re-. 

 ceptacle naked. Seed glabrous, 5-striate or angled. Pappus 

 plumose, usually scabrous. 



a. Involucre 3 — o-jlowered. 



1. E. fcexicula'ceum, (L.) Stem striate, finely pubescent, with pa- 

 niculate branches ; lower leaves eompoundly pinnate, with filiform seg- 

 ments, glabrous, furrowed on the upper surface ; the upper ones seta- 

 ceous, in clusters. Flowers in compound erect panicles, very small and 

 very numerous ; involucre with 6 interior equal leaves, and 6 small 

 exterior ones, all pubescent. Seeds cylindrical ; receptacle naked. — 

 Yellowish- white. U- Sept, — Oct. Very abundant. 3 — 10 feet. 



2. E. coronopifo'lium, (L.) Stein erect, pubescent, paniculately 

 branched ; lower leaves pinnatifid, with 5 — 7 linear-lanceolate seg- 

 ments, denticulate ; upper leaves linear, clustered, all pubescent. Flow- 

 ers in compound panicles; involucre with 8 — 10 unequal, pubescent 

 leaves. Seed glabrous, pappus scabrous. — White. U- Sept. — Oct. 

 Poor soils. Common. 3 — i feet. 



3. E. pIxNnatif'idum, (Ell.) Stem erect, striate, pubescent, branching, 

 with the branches pubescent; lower leaves pinnatifid, verticillate, with 

 linear segments, pubescent; upper leaves gerjerally alternate. Flowers 

 in fiistigiate corymbs; involucre 8 — 10-leaved, with glandular dots on 

 the back. Seed oblong, deeply striate ; pappus scabrous. — White. U 

 Sept. — Oct. Damp soils. 3 — 4 feet. 



4. E. linearifo'lium, (Walt.) Stem usually procumbent, very pu- 

 bescent toward the summit, branching. Leaves sessile, pubeseent, lin- 

 ear-lanceolate, with clusters of small leaves at the axil. Flowers in 

 irregular corymbs ; involucre with 10 linear villous leaves, glandular 

 on the outer surface. Seed deeply striate, pappus scabrous. — White. 

 U' Aug. — Sept. Dry soils. Common. 1 — 2 feet. 



5. E. HYSsopiFo'nuM, (L.) Stem erect, pubescent Leaves sessile, 

 the lower ones linear-lanceolate, opposite, somewhat toothed, upper 

 ones alternate, pubescent, with clusters of small leaves in the a.\ils. 

 Flowers in terminal corymbs; involucre 10-leaved, sprinkled with 

 glandular dots, purplish at the suuuiiit. Seed furrowed, glandular; 

 pappus scabrous. — White. IX. Sept. — Oct. Very common. 2 — 3 ft. 



6. E. glauces'cens, (Ell.) Stem erect, pubescent. Leaves broad- 

 lanceolate, slightly serrate toward the summit, 3-nerved, pubescent, 

 with a pair of small leaves in the axil. Leaves of the branches usually 

 altornato, small, glaucous. Flowers in corymbs; involucre with 8 — 10 



