| 1. Leaves alternate, entire; inflorescence terminal, many-flowered; petals white |
| MORTONIA (no key) |
| 1' Leaves opposite, ± toothed; inflorescence axillary, 15-flowered; petals ± reddish |
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| 2. Deciduous shrub or small tree, 26 m; leaf 314 cm; flower parts in 5's |
| EUONYMUS (no key) |
| 2' Evergreen shrub, < 1 m; leaf 13 cm; flower parts in 4's |
| PAXISTIMA (no key)
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