Casuarinaceae

Stems green, jointed, ridged; leaves reduced to a whorl of scale-like teeth at each joint Casuarinaceae

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Bracteoles of cone thinly woody and without a dorsal protuberance; extending well beyond the cone body giving the cone a "spiky" appearance even before opening. Mature nut grey or yellowish brown, dull, not glossy. Teeth on the branchlets in whorls of 8–20 Casuarina

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Bracteoles of cone thickly woody, convex and with a dorsal protuberance; not extending well beyond the cone body. Mature nut reddish brown to black, glossy. Teeth on the branchlets in whorls of 4–14 Allocasuarina