Agastache scrophulariifolia (Willd.) Kuntze
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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
Lamiaceae
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Scientific Name
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Description
Species Description - Much like no. 1 [Agastache nepetoides (L.) Kuntze]; lvs glabrous to villous beneath; spikes cylindric or tapering, to 15 cm, 1.5-2 cm thick (including the cors); bracts round- ovate, caudate-acuminate, often projecting; cal 7-9 mm at anthesis, the lobes 2-2.5 mm, lance-triangular, with straight or concave sides, sharply acute or acuminate; cor purplish. Upland woods; Vt. and N.Y. to Minn. and e. S.D., s. to N.C. and e. Kans. Aug., Sept.
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Common Names
purple giant hyssop