EcoFlora - Spermolepis inermis

Spermolepis inermis (Nutt. ex DC.) Mathias & Constance
Family: Apiaceae Red River Scaleseed [Apiastrum patens Coult.et Rose, more]	Gleason & Cronquist Indiana Flora Resources Vascular plants of NE US and adjacent Canada Erect, 2-6 dm, commonly branched above the middle only; rays 5-11, strongly ascending, 2-15 mm, very unequal; pedicels 2-6, unequal, to 6 mm or those of the central umbellets sessile; fr 1.5-2 mm, tuberculate; 2n=22. Dry or moist sandy soil; Tex. and n. Mex., e. to Neb. and s. Ill., and occasionally adventive farther e. May, June. (S. patens) Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp. ©The New York Botanical Garden. All rights reserved. Used by permission. From Flora of Indiana (1940) by Charles C. Deam ...... Indiana Coefficient of Conservatism: C = null, non-native Wetland Indicator Status: UPL Diagnostic Traits: glabrous, much branched annual; leaves finely dissected with filiform ultimate segments; involucral bracts lacking, the rays often unequal; flowers minute, few per umbellet; fruits tuberculate.
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