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1 Fresh plant with garlic-like odor; stems terete, glaucous, pubescent basally with spreading hairs; upper stem leaves clasping with auricles wrapping around the stem; siliques 5-8 mm long, 2-4 mm wide, scarcely winged, the wings < 1 mm wide; seeds alveolate
1 Fresh plant without garlic odor; stems ribbed and sometimes winged, green, glabrous basally; upper stem leaves clasping but auricles not wrapping around the stem; fruits broadly winged, the wings 3.5-5.0 mm wide; siliques (8-) 10-17 mm long, 7-12 mm wide, strongly winged, the wings 3.5-5.0 mm wide; seeds concentrically ridged