From Flora of Indiana (1940) by Charles C. Deam
Abundant along the L. & N. Railroad about 6 miles west of Solitude in Posey County. At this place the railroad runs along the base of Brewer Hill in the alluvial flood plain of the Wabash River.
Indiana Coefficient of Conservatism: C = 1
Wetland Indicator Status:
Annual; stems tending to be erect, usually branched, to 8 dm, mostly pubescent; lf-segments elliptic to narrowly oblong, hirsutulous beneath; rays 1-4, mostly 3, in fr stiffly erect or ascending; pedicels 3-10, becoming much thickened and often clavate; fr lanceolate, 5.5-8 mm, concavely narrowed to a short beak, the ribs stout, from a little narrower than to more often equaling or wider than the intervals; 2n=22. Moist to dry sandy soil; se. Va., Ky., s. Ind., and e. Neb., s. to Fla., Tex. and Ariz. Mar.-May. (C. floridanum) Two European biennials have been reported as casuals along the Atlantic seaboard. C. temulum L. has 6-10 rays, lance-ovate bractlets, and oblong to ovate lf-segments. C. bulbosum L. has 10-20 rays, lance- linear bractlets, and lanceolate to linear lf-segments.
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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