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Key to Casuarina

Casuarinaceae

Casuarina

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1 Leaves (teeth in whorls at each node) 6-8 per node, lacking a brown transverse band at or above the base of the teeth; longitudinal ridges of branchlets sharply angular; plant monoecious; branchlet segments 5-8 (-13) mm long, 0.5-0.7 (-1) mm in diameter
1 Leaves (teeth in whorls at each node) 7-14 (-17) per node, with a brown transverse band at or above the base of the teeth; longitudinal ridges of branchlets flattened or rounded; plant dioecious; branchlet segments 8-20 mm long, 0.9-1.2 mm in diameter
  2 Leaves (teeth in whorls at each node) 7-10 per node, with a brown transverse band above the base of the teeth; branchlet segments 8-20 mm long, 0.4-0.7 mm in diameter
  2 Leaves (teeth in whorls at each node) 10-14 (-17) per node, with a brown transverse band at the base of the teeth; branchlet segments 8-20 mm long, 0.8-1.2 mm in diameter