Pediomelum cuspidatum (Pursh) Rydb.

Much branched, thinly strigose, 3–6 dm from a tuberous-thickened root; petioles mostly 2–3 cm; lfls commonly 5, narrowly obovate or oblong-obovate, 2–4 cm; spikes dense, 2–6 cm; fls blue, 15–20 mm, sessile or nearly so; cal gibbous, densely glandular, otherwise glabrous or sparsely hirsute, the tube 5–6 mm, the lowest lobe much the longest, lanceolate, 8–10 mm; fr glandular, short-beaked. Prairies and plains; Minn. to Mont., s. to Ark. and Tex. June. (Psoralea c.)

Dry plains and calcareous hills. Clayey, rocky or sandy prairies in Texas.

Can be grown by seedlings. Seeds needs soaking.