1	"Branchlets with furrows usually glabrous; ribs rounded; south-west corner of Victoria"	"Allocasuarina mackliniana subsp. mackliniana"
1	"Branchlets with furrows obviously pubescent at least when young; ribs flat or only slightly rounded; Grampians northward"	2
2	"Branchlets with furrows pubescent only when young; ribs nearly flat to slightly rounded; Little Desert to Wyperfeld National Park"	"Allocasuarina mackliniana subsp. xerophila"
2	"Branchlets with furrows pubescent, often strongly so; ribs slightly rounded; Grampians"	"Allocasuarina mackliniana subsp. hirtilinea"