Stellate hairs or peltate scales, petiole often with clear exudate, sometimes aromatic

Euphorbiaceae (Acalypha, Alchornea, Croton)
| Without stellate or peltate scales, no exudate in petioles, nectaries on base of blade upperside

Flacourtiaceae (Hasseltia, Pleuranthodendron)
|