1	"Flowers bisexual"	2
1	"Flowers unisexual"	8
2	"Petal lamina < 4 mm long"	3
2	"Petal lamina ? 4 mm long"	7
3	"Shrubs to 2 m, usually many stemmed from base; leaves ovate to broadly ovate or rotund, obtuse to acute at the apex; basal lateral veins more than ½ as long as leaf lamina"	4
3	"Tree or single stem shrub; leaves narrowly ovate to ovate or elliptic-ovate, acuminate to acute at the apex; basal lateral veins less than ½ as long as leaf lamina"	5
4	"Petal lamina ? 2 mm long; fruits strigose or glabrous"	"Grewia latifolia"
4	"Petal lamina < 2 mm long; fruits pubescent"	"Grewia abutilifolia"
5	"Leaves on lower surface densely tomentose with stellate hairs up to 1 mm diam.; rays slender, soft, spreading to erect"	"Grewia papuana"
5	"Leaves on lower surface glabrous or with a sparse to moderately dense covering of simple or stellate hairs up to 0.5 mm diam.; rays slender or stout, either appressed or spreading"	6
6	"Leaves on lower surface glabrous or with scattered simple or appressed stellate hairs; sepals 5–8 mm long"	"Grewia glabra"
6	"Leaves on lower surface with a sparse to moderately dense covering of simple or stellate hairs up to 0.5 mm diam.; rays either appressed or spreading; sepals 9–12 mm long"	"Grewia australis"
7	"Leaves narrowly ovate to ovate or elliptic-ovate, 3-nerved from base; fruit depressed globose 10–20 mm diam."	"Grewia oxyphylla"
7	"Leaves rotund or very broadly ovate, mostly 5-nerved from base; fruit subglobose, 7–10 mm diam."	"Grewia asiatica"
8	"Leaves densely covered below with fine ? white tomentum"	9
8	"Leaves variously hairy below, never with dense white tomentum"	10
9	"Leaves obovate or elliptic-obovate; fruit densely stellate-pubescent"	"Grewia graniticola"
9	"Leaves broadly to narrowly elliptic or narrow ovate-elliptic; fruit glabrous or sparsely strigose, shiny surface"	"Grewia retusifolia"
10	"Fruit subglobose, 5–10 mm across, not conspicuously lobed"	11
10	"Fruit depressed globose, 10–15 mm diam., conspicuously 2–6-lobed"	12
11	"Leaves elliptic-ovate to broadly elliptic-ovate, 2.5–7 cm long, 1.5–4 cm wide, obtuse at the apex, usually symmetric at the base; fruit densely stellate-puberulous; flowers with only one or two staminodia, with sterile anther"	"Grewia scabrella"
11	"Leaves narrowly ovate to ovate, 3–18 cm long, 2–10 cm wide, acute to acuminate at the apex, usually asymmetric at the base; fruit sparsely pilose or glabrous; female flowers with numerous clavate staminodia, without sterile anther"	"Grewia breviflora"
12	"Leaves orbicular or oblate; 2.5–4 cm long, 2–4 cm wide"	"Grewia orbifolia"
12	"Leaves ovate to broadly ovate or ovate-elliptic, 6–14 cm long, 3–8 cm wide"	"Grewia mesomischa"