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1 Leaves ovate or elliptic-lanceolate to oblanceolate, 3-15 (-20) mm long, 1-4 mm wide; annual; seeds ashy, minutely or prominently tuberculate, 0.4-0.6 mm long.
..2 Stems puberulent in 2 lines; leaf blades 1-veined; sepals 1-veined, glabrous; [native, OK and nw. LA westward]