1	"Mature samaras grey or yellow-brown, dull; cone bracteoles thinly woody, prominent, extending well beyond cone body, without dorsal protuberance; teeth 5-20 per whorl"	Casuarina
1	"Mature samaras red-brown to black, shining; cone bracteoles thickly woody and convex, mostly extending only slightly beyond cone body, mostly with a separate angular, divided or spiny dorsal protuberance; teeth 4-14 per whorl"	Allocasuarina