Erect, 1–1.5 m, branched above; lvs thin, green, ovate or lance-ovate, to 15 cm, reduced upwards, coarsely serrate, rounded or subcordate at base, finely hairy beneath; petioles of the larger lvs to 6 cm, the upper reduced; spikes subcylindric, to 2 dm, 1–1.5 cm thick, occasionally interrupted at base; bracts broadly ovate, acuminate, not large; cal at anthesis glabrous, 6 mm, the lance-ovate lobes 1–1.5 mm, with convex margins, obtuse or subacute; cor greenish-yellow; 2n=18. Open woods; Vt. to s. Ont., Minn., and se. S.D., s. to Ga. and Okla. Aug., Sept.
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A large herb. The flowers are greenish yellow and in long spikes. These are 1.5 m long. The leaves have 5 cm long.
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