1	"Margins of leaves crenate or conspicuously irregular."	"Sannantha cunninghamii"
1	"Margins of leaves entire or minutely and sharply toothed."	2
2	"Leaves >1.5 mm wide."	3
2	"Leaves <1.5 mm wide."	5
3	"Leaves with midrib impressed on upper surface; 4-angular branchlets with undulating surface and crenate margins; inflorescences usually 3- or 7-flowered."	"Sannantha pluriflora"
3	"Leaves without midrib impressed on either surface; 4-angular branchlets smooth or papillose with entire margins; inflorescences mostly 7-flowered."	4
4	"Leaves 1.7–2.5 mm wide; fruit c. 1.5 mm long; north from Dorrigo district."	"Sannantha collina"
4	"Leaves 2.5–3.5 mm wide; fruit 2.5–3 mm long; south from near Wollomombi Falls."	"Sannantha crassa"
5	"Leaves ≤ 4 mm long."	"Sannantha whitei"
5	"Leaves >5 mm long."	6
6	"Leaves 5.5–10 mm long and 0.5–1 mm wide, concolorous, plano-convex to concavo-convex; pedicels 1–3 mm long."	"Sannantha angusta"
6	"Leaves 7–15 mm long and 1.1–1.5 mm wide, discolorous, flat; pedicels 2.5–4 mm long"	"Sannantha similis"