1	"Leaves with 3 distinctive longitudinal veins from the base"	Rhodamnia
1	"Leaves not as above"	2
2	"Flowers solitary, or in clusters with 3 branches at each cluster division (dichasium)"	3
2	"Flowers in clusters, not as above"	7
3	"Calyx and corolla 4-parted"	Luma/Lophomyrtus
3	"Calyx and corolla (4)5-parted"	4
4	"Ovary of 2 chambers"	Austromyrtus
4	"Ovary of 2–5 chambers"	5
5	"Leaves more than 5 cm long"	Psidium
5	"Leaves to 4 cm long"	6
6	"Leaves not strongly aromatic; petals often tinged with pink, at least at first; stamens to  as long as the petals"	Ugni
6	"Leaves strongly aromatic when crushed; petals white; stamens longer than the petals"	Myrtus
7	"Fruits with 1–2 large seeds"	8
7	"Fruits with seeds relatively small, more than 2 per fruit"	11
8	"Leaf and flower buds hairy; fruits 8-grooved"	"Eugenia uniflora"
8	"Buds and fruits not as above"	9
9	"Leaves wavy-edged; fruit tip with a persistent cylindrical protrusion"	Waterhousea
9	"Leaves and fruits not as above"	10
10	"Cotyledons not ‘wriggly’ (ruminate) in fruit section"	Syzygium
10	"Cotyledons ‘wriggly’ in section"	Acmena
11	"Leaves densely hairy below; calyx lobes and petals 4; stamens deep red; fruit 4–8 cm long"	"Acca (Feijoa)"
11	"Leaves hairless below; calyx forming a tube that splits irregularly; petals 5; fruit yellow or purple"	"Psidium (Guava)"