COMPOSITE. 



181 



ceolate, acuminate at each end, distinctly petioled, membranaceous, coarsely 

 serrate ; corymb fastigiate, somewhat paniculate ; scales of the involucre 

 smoothish, dotted with minute glands. Conyza camphorata Pursh. Bac- 

 charis fcdida Linn. 



Wet banks. Penn. ? to Ala. and Ken. Aug.— Oct. %.—Stem 2 — 4 feet 

 high, grooved or angled. The leaves are much larger, the heads more numerous, 

 and the odor is more powerful,than in the preceding. Fetid Marsh Fieabane. 



22. INULA. Linn. — Elecampane. 

 (Origin doubtful.) 



Heads many-flowered ; ray flowers in a single series, pistillate, 

 sometimes infertile, ligulate, rarely tubular; those of the disk 

 tubular, perfect. Involucre imbricate, in many series. Recep- 

 tacle flat or somewhat convex, naked. Anthers with 2 bristles 

 at base. Pappus capillary, roughish. 



/. Helenium Linn. : leaves toothed, acute, velvety tomentose beneath ; the* 

 radical ones ovate, tapering into a petiole ; the cauUne somewhat clasping ; 

 heads few, pedunculate, corymbose. 



Road sides. N. S. July, Aug. %. — Stem 3 — 4 feet high, branching at thf 

 top. Leaves very large. Heads large, solitary, on long terminal thick pedun 

 cles, yellow ; r^ys numerous, linear, 3- toothed. Introduced from Europe. 



Common Elecampane. 



23. ECLIPTA. Z.Mm.— Eclipta. 



(From the Greek cvAetTrw, to he deficient ; in allusion to its wingless achenia, 

 by which it is distinguished from Verhesina. Eat. Man.) 



Heads many-flowered ; ray flowers in one series, pistillate, 

 ligulate, very narrow and short ; those of the disk tubular and 

 perfect. Receptacle flattish, furnished with linear filiform chaff, 

 as long as the achenia. Involucre in two series; the scales 

 10 — 12, ovate-lanceolate, acuminate. Achenia of the ray 

 3-sided; of the disk compressed at the sides, muricate-tuber- 

 cular, somewhat hairy at the summit. Pappus none, or of 

 1 — 3 minute teeth. 



E. erecta Linn. : stem erect or ascending, appressed-strigose ; leaves 

 oblong-lanceolate, acuminate at both ends, sHghtly serrate ; pedicels solitary 

 or in pairs, severaf times as long as the head. E. procumbens Mich. Ver~ 

 besina alba Linn. 



Damp sandy soil. Md. to Flor. W. to Ken. and Louis. June — Oct. (Jj. — 

 Stem 1 — 3 feet long, often rooting at base. Heads small. E. hrachypoda Mich. 

 is a variety with the pedicels about as long as the heads. A very widely dif« 

 fused species. Upright Eclipta. 



