Eryngium yuccifolium Michx.
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Authority
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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Family
Apiaceae
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Scientific Name
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Description
Species Description - Coarse, erect perennial to 1 m or more from fascicled roots, usually simple to the infl; lvs linear, much elongate, parallel-veined, entire or remotely spinulose, the lower to 8 dm × 2 cm, the upper gradually reduced; heads round-ovoid, 1–2 cm long and thick; bracts lance-ovate, entire or nearly so, cuspidate, rarely projecting from beneath the head; bractlets similar but smaller; 2n=96. Moist or dry sandy soil, open woods, and prairies; s. U.S., n. to Va., Ind., Minn., and Kans., and occasionally adventive farther north. July, Aug. (E. aquaticum, misapplied)
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Common Names
rattlesnake-master