Pluchea odorata (L.) Cass.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Asteraceae
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Scientific Name
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Description
Species Description - Annual, ± fibrous-rooted, to 10(–15) dm, glandular-puberulent to occasionally subglabrate; lvs ample, lanceolate to elliptic or ovate, 4–15 × 1–7 cm, acute or acuminate, ± serrate, short-petiolate, or sometimes, especially the upper, merely tapering to the base; heads pink-purple, numerous in a generally ± flat-topped or layered infl; invol evidently pubescent with short, multicellular, glandular-viscid hairs, the bracts imbricate in several series, commonly ± pink or purple, at least distally; 2n=20. Salt or brackish (seldom freshwater) marshes, chiefly along the coast; Mass. to Fla., Tex., and trop. Amer., and occasionally inland, as in s. Ill. and se. Mich. Aug., Sept. Most of our plants are var. succulenta (Fernald) Cronquist, seldom over 6 dm, with large heads, the invol 5.5–7 mm high, the disk 5–9 mm wide. In Md. and Va. this passes into the more southern var. odorata, taller, with smaller heads, the invol 4–5.5 mm high and the disk 4–7 mm wide. (P. purpurascens)