Acaulescent perennial herb, the lvs and peduncle arising from a long rhizome; petiole erect, to 5 dm; lvs ternate, each division pinnately 3-5-foliolate; lfls lance- elliptic to obovate, to 15 נ8 cm, acuminate, finely serrate, the lateral ones asymmetric at base; peduncles usually much shorter than the petioles, bearing (2)3(-7) umbels; styles distinct; fr nearly black; 2n=24. Woods; Nf. to D.C., Ind., Neb., and Colo., and in the mts. to Ga. May, June.
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
Infrequent to rare in the northern counties in moist soil on the borders of marshes, bogs, and lakes; south of the lake area it is very rare, being restricted to a few rocky, wooded bluffs. The rays of the umbels and the principal veins of the under surface of the leaves of Indiana specimens are pubescent.
Indiana Coefficient of Conservatism: C = 7
Wetland Indicator Status: FACU
Diagnostic Traits: Herbaceous, lacking a central stem, the solitary compound leaf with 3-divisions (i.e., ternate) each with 3-5 leaflets; inflorescences arising from a subterranean rhizome, racemose, with 2 to 7 umbels; fruits purple-black drupes.
Citation: The vPlants Project. vPlants: A Virtual Herbarium of the Chicago Region. http://www.vplants.org
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