| Taxon | Medicago polymorpha |
| group | Eudicots |
| Family | Fabaceae |
| Family common name(s) | legume; legumes; leguminosae; pea; bean; clover; pulse; pulses |
| Genus common name(s) | medicago; medick; medic; bur medick; burr medick; bur medic; burr medic; burmedic; burrmedic; burclover; burrclover; bur-clover; bur clover; burr clover; burr-clover; melilot; melilot trefoil; nonsuch; alfalfa; alphalpha |
| Species common name(s) | toothed medick; toothed medic; toothed burr medick; toothed burr medic; toothed bur-clover; toothed bur clover; toothed burr clover; toothed burclover; common burr medick; multi-formed medick; polymorphic medic; common burr medic; common bur-clover; common burclover; common bur clover; common burr clover; Shanghai trefoil |
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| Common name(s) generally applied to other taxa or multiple taxa | hairy medick, hairy medic, annual medick, annual medic, heart medick are applied to multiple Medicago taxa; hop clover, hop-clover, trefoil are applied to multiple Fabaceae taxa; nonesuch is applied to taxa in multiple families |
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| Notes | although not native, sometimes called California burclover, California bur-clover, California clover, California lucerne, Californian lucerne |
| Synonymy: The Jepson Manual (1993), FNA, PLANTS, etc | Medicago hispida Gaertn.; Medicago nigra Krock. |
