Marshallia Schreber. Marshallia, Barbara's-buttons.
A genus of about 11-13 species, perennial herbs, of the se. United States. Marshallia ranges from sc. VA, sw. PA, WV, s. KY, s. MO, and c. OK, south to c. peninsular FL, and wc. TX.
Ref: Beadle & Boynton (1901); Channell (1957); Cronquist (1980); Knapp, Poindexter, & Weakley (2020); Watson (2006) In Flora of North America Editorial Committee (2006c); Watson & Estes (1990); Watson, Elisens, & Estes (1991); Watson, Jansen, & Estes (1991); Weakley & Poindexter (2012). Show full citations.
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