1 "Furrows of branchlets shallow and open, exposing the stomates; teeth 4 per whorl; cone bracts broad and woody beneath each pair of bracteoles" "Gymnostoma {Gymnostoma australianum}" 1 "Furrows of branchlets deep and narrow, the stomates not visible; teeth 4-20 per whorl; cone bracts mostly thin at outer face, not conspicuous" 2 2 "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 2 "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