Plants 30–70 cm (aerial stems branched distally). Leaves mostly basal (distally reduced); basal petiolate; blades 3-nerved, narrowly elliptic to spatulate, 6–25 cm × 8–3 mm. Heads 2–5(–10), 22–37 mm diam. Peduncles 10–20 cm. Phyllaries 8–11 × 2–3.5 mm, apices acute. Paleae ± linear, apices acute. Corollas pink, lobes 5–7 × 1 mm. Pappi: scale margins irregular, broken, serrulate. 2n = 36.

Flowering May–Jun. Meadows, roadsides; 500–1000 m; Ala., Ga.

Marshallia mohrii grows in the southern Appalachians. It may be an allotetraploid derivative of diploids, probably M. grandiflora and either M. trinervia or M. graminifolia subsp. tenuifolia

SELECTED REFERENCE

Watson, L. E., W. J. Elisens, and J. R. Estes. 1991. Cytogenetic and electrophoretic evidence for the allotetraploid origin of Marshallia mohrii (Asteraceae). Amer. J. Bot. 78: 408–416.