| 1 | Female flowers pedicellate; calyx with 4 or 5 sepals, the subtending bracts inconspicuous, not becoming foliaceous in fruit | Subgen. Linostachys |
| 2 | Female flowers sessile; calyx with 3 sepals, the subtending bracts becoming foliaceous and accrescent in fruit (except in Acalypha hispida) | Subgen. Acalypha |
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