Key based on fruiting specimens

1. Herbaceous parasitic vine without leaves ........... Cassytha

1a. Trees or shrubs with regular leaves................................. 2

2. Fruit seated in a shallow or deep cup-shaped cupule ........ ............................................................................... Ocotea

2a. Fruit not seated in a cupule............................................ 3

3. Scars of fallen tepals on the top of the fruits.................. 4

3a. Scars of fallen tepals at the base of the fruits or small, persistent tepals present at the base of the fruits ............ 5

4. Leaves alternate ........................................... Cryptocarya

4a. Leaves opposite.......................................... Aspidostemon

5. Fruits with 4 small tepals or 4 scars of fallen tepals at the base; leaves alternate ......................................... Potameia

5a. Fruits with 6 small tepals or 6 scars of fallen tepals at the base; leaves alternate or opposite .............. Beilschmiedia