ORDER LXVIII. COMPOSITE 403 



Genus LXXVL— CACA'LIA. L. 

 (An ancient name.) 



Involucre cylindric, oblong, scaly at the base ; florets all 

 perfect, tubular. Receptacle naked. Pappus pilose. 



1. C. suaveo'lens. (Scnecio suaveolens.) Stem erect, glabrous. Leaven 

 ovate-hastate, serrate, mucronate, petioles winged, colored. Flowers 

 in erect corymbs; involucre many-leaved, slightly pubescent at the 

 summit, with irregular subulate scales at the base ; disk florets numer- 

 ous. Seed striate; pappus pilose. — Yellow. 2£. Aug. — Oct. Middle 

 Car. and Geo. 3 — 5 feet. 



2. C. atriplicifo'lia, (L.) Stem erect, branching, glabrous, slightly 

 glaucous. Leaven cordate, somewhat reniform, glabrous, toothed, up- 

 per ones lanceolate-ovate, glaucous beneath. Flowers in terminal co- 

 rymbs ; involucre with 5 equal linear leaves, 5 -flowered. Seed oblong, 

 ovate, glabrous; pappus scabrous; receptacle with an irregular mass 

 in the center, 8-cleft at the summit. — White, tinged with purple. 2£. 

 July — Sept. In rich soils in Car. and Geo. 3 — 8 foet. 



3. C. ova'ta, (Ell.) Stem erect, branching at the summit. Leaves 

 ovate, obtusely toothed, 7-nerved, glaucous beneath. Flowers in fasti- 

 giate corymbs ; involucre composed of 5 equal linear leaves. Seed gla- 

 brous ; pappus pilose ; receptacle naked, with an irregular projection 

 in the center. — White. %. Sept. — Oct. West Georgia and Alabama. 

 3—4 feet 



4. C. laxceola'ta, (Nutt.) Stem erect, branching toward the summit. 

 Leaves long, narrow, lanceolate, remoiely dentate, 7-nerved, glaucous 

 beneath. Flowers in terminal corymbs; involucre with 5 linear-lance- 

 olate leaves, with membranaceous margins. Seed glabrous, striate; 

 pappus pilose ; receptacle small, with a projection in the center. — 

 White. U. Aug.— Sept. Middle Geo. 4— 6 feet. * 



5. C. divehsifo'lia, (T. & G.) Stem angled. Leaves not glaucous, 

 somewhat 3 nerved, the lower ones ovate, somewhat cordate, obtusely 

 toothed, upper leaves 3 — 5dobed, somewhat hastate. — Flor. Swamps. 



Genus LXXVIL— SENE'CIO. L. 

 (From senex, an old man, in allusion to the hoary appearance of some species.) 



Involucre cylindrical, scaly at the base; scales withered at 

 the point. Florets of the disk perfect, of the ray pistillate. 

 Receptacle naked. Pappus pilose, abundant. 



1. S. loba'tus, (Pers.) Stem erect, glabrous, angled, fistulous, succu- 

 lent. Leaves pinnatifid, sessile, with spatulate lobes, dentate, glabrous. 

 Flowers in corymbose panicles; involucre with linear leaves; ray flo- 

 rets about 12, 3-toothed at the summit. Seed striate ; pappus bristly. 

 — Yellow. 0. Jan. — May. Common. 1—3 feet. Butter-weed. 



2. S. au'reus, (L.) Stem erect, glabrous, slender, sometimes pubes- 

 cent, near the base. Radical leaves cordate, or nearly orbicular, ser- 

 rate, glabrous, supported on long petioles ; cauline leaves, the upper 

 ones amplexicaul, pinnatifid, small, lower ones nearly orbicular. Flow- 



