1	"Adult leaves scale-like or acicular"	2
1	"Adult leaves flattened"	13
2	"Adult leaves appressed to stem"	3
2	"Adult leaves acicular, not appressed to stem"	9
3	"Leaves opposite or whorled"	4
3	"Leaves alternate"	7
4	"Leaves whorled"	Cupressaceae
4	"Leaves opposite"	5
5	Trees	Cupressus
5	Shrubs	6
6	"Leaves acutely keeled"	Diselma
6	"Leaves dorsally rounded"	Microcachrys
7	Shrubs	Microstrobos
7	Trees	8
8	"Branchlets less than 2 mm diameter"	Lagarostrobos
8	"Branchlets more than 2.5 mm diameter"	"Athrotaxis cupressoides"
9	"Adult leaves shedding (abscission layer present), straight and needle-like"	Pinaceae
9	"Adult leaves not shedding (abscission layer absent), curved (at least at the tips) or in whorls, mostly subulate"	10
10	"Leaves whorled"	"Callitris macleayana"
10	"Leaves alternate"	11
11	Shrubs	"Microstrobos fitzgeraldii"
11	Trees	12
12	"Adult leaves dorsally keeled"	"Araucaria cunninghamii"
12	"Adult leaves dorsally rounded"	"Athrotaxis selaginoides"
13	"Midrib present"	Podocarpaceae
13	"Midrib absent"	Araucariaceae