Stem(s) slender, erect, 6–12 dm, usually branched above, usually glabrous or nearly so; stipules narrow, 2–4 mm, caducous; petioles mostly 1.5–5 cm; lfls thin, lanceolate or oblong, mostly 3–8 times as long as wide, glabrous or somewhat appressed-hairy, to 10 × 2.5 cm; infl large and branching, 1–4 dm; fls 6–8 mm, on pedicels 4–11 mm; cal 2.5–3.5 mm; stipe 2.5–3.5 mm; articles 3–6, ± triangular, 5–7.5 × 3.5–4.5 mm. Dry woods; s. Me. to s. Ont., Mich., and Neb., s. to Fla. and Tex. July, Aug. The broader-lvd forms grade into no. 18 [Desmodium glabellum (Michx.) DC.].
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