Marshallia trinervia

Plants 40-60(-80) cm (rhizom-atous). Leaves mostly cauline (not notably reduced distally); proximal petiolate; blades strongly 3-nerved, ovate, 4-10 cm × 11-30 mm. Heads 1-5, 20-33 mm diam. Peduncles 5-15+ cm. Phyllaries 8-12 × 1.5-3 mm, apices acute. Paleae ± linear, apices acute. Corollas pink, lobes 3.5-7.5 × 0.5-1 mm. Pappi: scale margins serrulate. 2n = 18.

Flowering May-Jun. Understories, mixed hardwood forests, along streams, slightly disturbed sites; 100-500 m; Ala., Ga., La., Miss., N.C., S.C., Tenn.

Glabrous, ±colonial from short-creeping rhizomes, the stems 4-8 dm; lvs thin, strongly trinerved, mostly 5-10 נ1-3.5 cm, equably distributed, the lower oblanceolate or spatulate, petiolate, obtuse or rounded, often deciduous before anthesis, those above fully as large, lance-ovate or lance-elliptic to ovate, acuminate or acute, sessile or nearly so; internodes 10-25; heads 2-3 cm wide in fl, solitary (few) on a terminal peduncle 1-2 dm; receptacular and invol bracts acute; 2n=18. Woods, streambanks, and cliffs, often on calcareous clay; Va. to S.C., Tenn., and La. May, June.

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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