Polymnia uvedalia L.

• Authority

  Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

• Family

  Asteraceae

• Scientific Name

  Polymnia uvedalia L.

• Description

  Species Description - Coarse perennial 1–3 m, the stem glandular or spreading- hairy beneath the heads, otherwise generally glabrous; lvs large, sometimes over 3 dm, deltoid-ovate, subpalmately lobed and veined, scabrous-hispid to subglabrous above, more finely hairy and often glandular beneath, with broadly winged, sometimes runcinate petiole; heads in moderately open, leafy cymes, the bright yellow disk ca 1.5 cm wide; invol bracts lance-ovate to ovate or elliptic, leafy, 1–2 cm, much broader and generally longer than the outer receptacular bracts; rays ca 8–11, bright yellow, 1–2(–3) cm, rarely reduced and inconspicuous; achenes ca 6 mm, impressed-striate (or shallowly ribbed and grooved), with many nerves; 2n=32. Woods and meadows; N.Y. to Ill. and Mo., s. to Fla. and Tex. July–Sept.(Smallanthus u.)

• Common Names

  yellow-flowered leaf-cup