370 COMPOSITiE. Pluchea. 



p. 261. P. camphorata and marilandica, DC. prodr. 5. p. 452. Erigeron camphoratum, 

 Linn. sp. 2. p. 864 ; Willd. sp. 3. p. 1960. Conyza Marilandica, Michx. fl. 2. p. 126; 

 Pursh, fl. 2. p. 523 ; Nutt. gen. 2. p. 145 ; Ell. sk. 2. p. 320. C. camphorata, Bigel. fl. 

 Bost. p. 299 ; Torr. compend. p. 288 ; Beck, hot. p. 176. 



Stem erect, thick, 12-18 inches high, fastigiately branched above. Leaves 2-3 inches 

 long, rather succulent, abruptly narrowed at the base, but hardly petioled. Heads at length 

 depressed-globose, in numerous crowded fastigiate corymbs. Scales of the involucre purplish, 

 and the flowers pale purple. 



Salt marshes, Long Island, Island of New-York, and in Westchester county. August - 

 October. 



Subtribe IV. Inule^, Cass. Heads mostly radiate and heterogamous, never dioecious. 

 Receptacle not chaffy. Anthers caudate at the base. — Leaves alternate. Heads not 

 glomerate. Ray-flowers of the same color as the disk. 



15. INULA. Linn.; DC. prodr. 5. p. 463 ; Endl. gen. 2426. ELECAMPANE. 



[Origin of the name uncertain.] 



Heads many-flowered ; the ray-flowers in a single series, pistillate but sometimes infertile, 

 ligulate or rarely somewhat tubular ; those of the disk tubular, perfect. Involucre imbricate 

 in several series. Receptacle flat or somewhat convex, naked. Anthers with 2 bristles at 

 the base. Achenia terete or 4-sided. Pappus capillary, slightly rough. — Mostly perennial 

 herbs, with clasping cauline leaves. Heads solitary or corymbose at the summit of the 

 peduncle. Flowers yellow. 



1. Inula Helenium, Linn. Common Elecampane. 



Leaves velvety-tomentose underneath, acute, denticulate ; the radical ones ovate, tapering 

 into a long petiole , the cauline somewhat claspmg ; heads (large) pedunculate, corymbose. — 

 Linn. sp. 2. p. 881 ; Lam. ill. t. 680 ; Engl. hot. t. 1546 ; Pursh, fl. 2. p. 531 ; Bigel. fl. 

 Bost. p. 301 ; Torr. compend. p. 290 ; Beck, bot. p. 176 ; Darlingt. fl. Cest. p. 476; DC. 

 prodr. 5. p. 463 ; Torr. ^ Gr. fl. N. Am. 2. p. 267. 



Root perennial, thick and branching, mucilaginous. Stem 3-5 feet high, erect, stout, 

 branching towards the summit. Leaves often a foot or more in length, and 4 — 6 inches broad. 

 Heads of flowers on long terminal thick peduncles. Involucre woolly ; the outer scales large 

 and broadly ovate. Rays numerous, linear, 3-toothed at the extremity. Achenia 4-sided, 

 smooth. 



Road-sides, and about houses ; introduced from Europe, and now thoroughly naturalized. 

 July - August. The root is a popular domestic remedy for colds. 



