Psoralidium tenuiflorum (Pursh) Rydb.
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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
Fabaceae
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Scientific Name
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Description
Species Description - Erect, much branched, to 1 m, gray- strigose, rhizomatous; petioles 0.4–1 cm; lfls 3 or 5, narrowly elliptic to oblanceolate, subglabrous above, mostly 2–4 cm × 5–8 mm; racemes loose and open, 4–10 cm, on elongate peduncles exceeding the lvs; pedicels 1.5–3 mm; fls 1–4 per node, blue (white), 5–8 mm; cal hirsute and glandular-punctate, the tube 1.5–2 mm, the lobes narrowly triangular, acute, the lowest 1.2–1.8 mm, the other 4 shorter; fr flattened-ovoid, 7–8 mm; 2n=22. Dry prairies and plains; Mont. to Utah and Ariz., e. to Minn., Ind., and Mo. May, June. (Psoralea t.; Psoralea floribunda)
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Common Names
gray scurf-pea