1	"Bark smooth or finely striate; cone valves subdivided into 3–5 parts (giving cones a smoothish outline with a chequered surface); East Gippsland only"	"Allocasuarina nana"
1	"Bark smooth, fissured or furrowed; cone valves usually with a single abaxial protuberance (occasionally with 2 lateral bodies)"	2
2	"Trees; branchlets minutely roughened; teeth 9–14 per whorl"	3
2	"Shrubs or trees; branchlets smooth or rib minutely serrate in profile; teeth 4–11 per whorl"	4
3	"Branchlets ascending; teeth erect, tightly appressed; cones broader than long, with valves in 2 or 3 wheel-like rows"	"Allocasuarina luehmannii"
3	"Branchlets drooping; teeth spreading; cones longer than broad, with valves in several rows"	"Allocasuarina verticillata"
4	"Branchlet ribs with median groove"	5
4	"Branchlet ribs without median groove"	6
5	"Teeth not overlapping"	"Allocasuarina paludosa"
5	"Teeth overlapping; Big and Little Deserts only"	"Allocasuarina pusilla"
6	"Teeth overlapping at least at base when young"	7
6	"Teeth not overlapping (mostly not withered)"	12
7	"Branchlet ribs flat or slightly rounded"	8
7	"Branchlet ribs angular or strongly rounded, with keel or convexity continued onto teeth"	9
8	"Teeth 7–10, more than 0.5 mm long, spreading to recurved, strongly withered; branchlet furrows pubescent or glabrous"	"Allocasuarina mackliniana"
8	"Teeth 5–7, 0.5 mm long or less, erect to spreading, not withered or slightly so at apex; branchlet furrows glabrous"	"Allocasuarina pusilla"
9	"Branchlet internodes with a waxy bloom at least when dry; teeth 6 or 7, erect, not withered; cones on peduncle 2–12 mm long; Grampians only"	"Allocasuarina grampiana"
9	"Branchlet internodes without a waxy bloom; teeth 5–11, recurved to erect, often withered; cones sessile or on peduncle to 5 mm long"	10
10	"Teeth 5–7, erect and appressed to occasionally spreading"	"Allocasuarina misera"
10	"Teeth 7–11, recurved to spreading"	11
11	"Teeth strongly withered; branchlet ribs only slightly rounded, furrows pubescent or glabrous, but always pubescent if in the Grampians; west of Melbourne"	"Allocasuarina mackliniana"
11	"Teeth mostly somewhat withered; branchlet ribs rounded, furrows glabrous; Grampians and allied mountains, and east of Melbourne"	"Allocasuarina paradoxa"
12	"Branchlet furrows obviously pubescent, ribs without minutely serrate central keel; mostly tree 5–15 m, but sometimes smaller shrub"	"Allocasuarina littoralis"
12	"Branchlet furrows glabrous or if pubescent, ribs with minutely serrate central keel"	13
13	"Branchlet ribs sharply angular with minutely serrate keel, often whitish; teeth erect and appressed; west of Melbourne only"	"Allocasuarina muelleriana"
13	"Branchlet ribs angular, rounded or flat"	14
14	"Branchlet ribs flat to rounded; teeth usually appressed; winged seed c. 4 mm long"	"Allocasuarina misera"
14	"Branchlet ribs rounded or angular; teeth erect but not appressed; winged seed 5–8 mm long (rarely to 3.5 mm long in A. diminuta)"	15
15	"Branchlets with strong waxy bloom; Grampians"	"Allocasuarina grampiana"
15	"Branchlets with waxy bloom faint or absent; east and north-east of Melbourne only"	16
16	"Shrubs to 3 m tall; cones robust, mostly more than 20 mm long and 10 mm diam.; seeds 5–8 mm long"	"Allocasuarina media"
16	"Trees or tall shrubs 3–5 m tall; cones small, mostly less than 20 mm long and 10 mm diam.; seeds 3.5–5 mm long"	"Allocasuarina diminuta"