EtJPATORiuM. COMPOSITE. 91 



series, subulate-linear, acute, 2-nerved, slightly pubescent; pappus about tlie 

 length of the infundibulitbrm-tubular corolla; achenia glabrous. — Walt. Car. 

 p. 200 ; EU. ! sic. 2. p. 306 ; DC. ! prodr. 5. ;;. 175. 



Rich soil, S. Carolina! to Florida! Louisiana I and Texas! Sept.-Nov. 

 — Stem 2-3 feet high, at length decumbent and producing nunaerous branch- 

 es. Leaves 1-2 inches long, ihe lateral nerves pedately branched from the 

 base ; ])etioles rather shorter than the lamina. Heads nearly as large as in 

 E. ageratoides. Lobes of the corolla light purple, very short, ovate, obtuse, 

 glabrous. Branches of the slightly exserted style very obtuse. — Considera- 

 bly resembles Conoclinium cislestinum. 



24. E. occidentale (Hook.): nearly glabrous; stem (or branches) slender; 

 leaves alternate (rarely opposite), on short petioles, ovate, acute or acumi- 

 nate, tripU-nerved, coarsely and sparingly serrate ; the uppermost narrow, 

 entire; corymbs small and mostly simple, panicled ; heads 15-25-flowered ; 

 scales of the involucre linear, acute, nearly ecjual, in a single series; corolla 

 infundlbulifonn ; achenia slender, glabrous. — Hook. ! fl. Bor.-Am. 1. p. J05 ; 

 DC. ! prodr. 5. p. 176. E. Oreganum, NuU. in trans. Amcr. p)hil. soc. {n. 

 ser.) 7. p. 286. 



Interior of Oregon, in stony places, Douglas! Nuttall /—Plant 6-12 inches 

 high. Flowers white or pale rose-color. Styles much exserted. Leaves 

 about an inch long. 



Eupalorium hdeum of Rafinesque doubdess belongs to some other genus ; but it 

 ■will never be identified by the following character : " E. luteum (yellow Eupatory) ; 

 leaves linear, cunsiform, acute, entire, smooth ; flowers paniculated ; calyx 4-flow- 

 ered.— In New Jersey." Rif. in meJ. repos. (/lex. 2.) 5. p. 361.— E. crass ijo'ium and 

 E. viola:eum are Rafinesquian species of the Florula Ludoviciana: the latter may 

 be E. incarnatum, Walt. 



E'lpa'oriwm P'rrinn^nnum. of Sprengel, and of Schlechtendal (in Linnan, 11. p. 

 5), which came from the West Indies, and not from South America as Sprengel 

 states, is a genuine species of Vernonia, (fide. sp. authen. in herb. Torr.] : Prof. 

 Schlechtendal must have overlooked the double pappus. 



17. MHCANIA. Willd. sjkc. 3. p. 1452 ; DC. prodr. 5. p. 187. 



Heads mostly 4-flowered. Receptacle naked, narrow. Scales of the in- 

 volucre 4 or 5. Corolla dilated or campanulate at the summit, 5-toothed. 

 Anthers partly exserted. (Style with a cylindrical glabrous bulb at the 

 base ; the branches exserted, filiform, scarcely obtuse.) Achenia angled. 

 Pappus in a single series, capillary, scabrous. — Shrubby or herbaceous 

 mostly climbing plants (chiefly tropical and American), with opposite com- 

 monly cordate leaves. Heads corymbose, panicled, or spicate. Flowers 

 whitish. 



1. M. scandens (Willd.) : stem glabrous, twining; leaves on slender peti- 

 oles, cordate, acuminate, repandly crenale or angularly toothed towards the 

 base, membranaceous, slightly scabrous or [)ubesceni, or glabrous; corymbs 

 paniculate, clu'^tered ; scales of the involucre lanceolate; achenia minutely 

 glandular— [F«//rZ. spec. 3. p. 1743 ; Pursh! fl. 2. p. 517 ; Ell. sk. 2. p. 

 292; Bigcl. fl. Bost. ed. 3. p. 314; DarUngt. fl. Cest. p. 454. Eupato- 

 rium scandens, Linn. ; Michx. ! fl. 2. p. 97 ; Jacq. ic. rar. t. 169. 



/3. pubtscens : stem and leaves more or less pubescent. — M. pube.scens, 

 M'M. cat. p. 71 ; NiM. gen. 2. p. 136 ; Ell. I. c. ; DC. ! I. c, cV 7. {manl.) 

 p. 271. Eupatorium scaudens, Linn. ! (as to specimen in his herb.) ; Walt. 

 Car. p. 198. 



