COMPOSITE. (composite family.) 217 



8. C. villosa, Xntt. Rough-hairy and somewhat hoary throughout j stem 

 rigid, very leafy; leaves Lanceolate, acute, entire or sparingly serrate ; the upper 

 ones sessile, the lowest narrowed into a petiole ; heads large, in a simple corymb. 

 — Dry Boil, Alabama, and westward. Sept. — Stem l°-2° high. Leaves l' 

 long, fringed near the base. 



9. C. decumbens, n. sp. Stems decumbent, simple, silky-villous ; leaves 

 villous, lanceolate-oblong, obtuse, entire, sessile, leafy in the axils; the lowest 

 spatulate-oblong, clustered ; heads large, in a loose corymbose panicle ; the 

 peduncles and involucre glandular-pubescent ; rays about 25, showy ; achenia 

 hairy, furrowed ; exterior pappus bristly. — Sandy shores on St. Vincent's Island, 

 West Florida. Oct and Nov. © —Stems 2°-4° long. Upper leaves £'-1' 

 long, the lowest 3'-4'. Heads largest of all. 



25. INULA, L. Elecampane. 



Heads many-flowered. Bays pistillate. Scales of the involucre imbricated in 

 several rows. Receptacle flat or convex, naked. Anthers bicaudate at the base. 

 Pappus single, of capillary slightly scabrous bristles. — Perennial herbs. Flow- 

 ers yellow. 



1. I. Helenium, L. Stem stout; leaves large, ovate, denticulate, tomen- 

 tose beneath ; the lowest ones petioled, the upper clasping ; heads very large, 

 somewhat corymbose ; outer scales of the involucre broadly ovate, leafv ; rays 

 numerous, narrow ; achenia 4-sided, smooth. — Mountains of North Carolina. 

 Introduced. 



26. CONYZA, L. 



Heads many-flowered ; the exterior flowers pistillate, fertile, in several rows ; 

 the corolla filiform, 2-3-toothed ; a few of the central flowers staminate, with a 

 tubular, 5-toothed corolla. Scales of the involucre in several rows. Receptacle 

 punctate. Pappus a single row of capillary bristles. — Branching herbs, with 

 toothed-lobed leaves, and heads of yellow flowers in corymbs or panicles. 



1. C. ambigua, DC. Rough-hairy; lower leaves oblong-lanceolate, lobed, 

 the upper entire, linear; heads panicled. (C sinuata, Ell.) — Around Charles- 

 ton. Introduced. April -July. — Stem 2° high. 



27. BACCHARIS, L. 



Heads dioecious, many-flowered ; the flowers all tubular. Corolla of the sterile 

 flowers 5-cleft ; of the fertile ones filiform, nearly entire, without anthers ; style 

 exserted. Scales of the oblong or hemispherical involucre imbricated in sev- 

 eral rows. Receptacle naked or somewhat chaffy. Achenia ribbed. Pappus 

 of the sterile flowers capillary, in a single row, as long as the involucre ; of the 

 fertile flowers in 1 - several rows, commonly much longer than the involucre. — 

 Smooth and resinous shrubs. Leaves alternate. Flowers white. 



1. B. halimifolia, L. Branches angled; leaves obovate, or oblong-ob- 

 ovate, toothed above the middle, the uppermost lanceolate, entire ; heads pedun- 



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