224 COMPOSITZ. (COMPOSITE FAMILY.) 
1. X. strumarium, L. Stem spineless, rough, branched ; leaves large, 
broadly cordate, 3 - 5-lobed ; the lobes toothed, acute and rough on both sides; 
fruit oval, pointed by two straight and smooth beaks. — Var. ECHINATUM. - 
Leaves obtuse, less strongly lobed ; the incurved beaks and spines of the larger — 
(1’) fruit bristly. — Cultivated fields and waste places, common. July, Sept.— 
Stem 1°-4° high, often spotted. a 
2. X. spinosum, L. Stem armed with triple spines, much branched; 
leaves lanceolate, entire or 3-lobed, hoary-tomentose beneath ; fruit pointed by & 
single beak. — Waste places around the larger seaports, and sparingly in the 
interior. Introduced. Aug. and Sept.— Stem 29-3? high. 
va eee ae eras Ee 
38. ECLIPTA, L. 
Heads many-flowered ; the ray-flower$short, pistillate, in a single row; those — 
of the disk tubular, 4-toothed, perfect. Scales of the involucre 10-12, in "o 
rows. Receptacle flat, with bristly chaff. Achenia 3- 4-angled, hairy at the — — i 
apex. Pappus none.— Rough branching annuals, with opposite lanceolate — 
leaves. Heads small, axillary, on peduncles of varying length. Flowers 7 
white. i 
1. E. erecta, L. Stem erect or diffuse, terete, tumid below the joints, — — 
sprinkled, like the leaves, with appressed rigid hairs; leaves oblong-lanceolate, —— — 
“acute, serrate, narrowed into a petiole; peduncles single or 2 - 3 together. - (E. 
procumbens, and E. brachypoda, Michx.) — Wet places, Florida, and north- 
ward. Sept. and Oct. — Stem 6! - 3? long. g 
2. E. longifolia, Schrad. Stem erect, rough-hairy; leaves lanceolate of 
oblong-lanceolate, acuminate, serrate, sessile and clasping; peduncles longe” 
than the heads. — Wet places, Apalachicola, Florida. Sept. — Stem 199 3? 
high. Leaves 4' - 6' long. : 
39. BORRICHIA, Adans. 
Heads many-flowered ; ray-flowers pistillate, in a single row; those of tho 
disk tubular, 5-toothed, perfect. Scales of the hemispherical involucre imbri- 
cated; the exterior ones leafy. Receptacle flat, with rigid persistent CA 
Achenia somewhat wedge-shaped, 3 -4angled. -Pappus a 3- 4-toothed border. 
—Fleshy maritime shrubs. Leaves opposite and slightly connate. Heads Pa 
-Jong as the disk ; the inner ones and chaff of the receptacle obtuse. —Key Wet 
_ceptacle spine 
ida to North | 
