1	"Stamens distinctly 5-bundled, staminal ring absent"	"Phymatocarpus maxwellii"
1	"Stamens not distinctly 5-bundled (although often aggregated into clusters opposite the petals and then with weakly developed bundle claws), staminal ring well-developed ( 1.4-3 mm long)"	2
2	"Stamens 46-71 per flower; flowers bracteolate; leaf blade broadly elliptic, elliptic, obovate, angular-obovate or subcircular, the venation parallel-pinnate with 1-3 veins"	"Phymatocarpus porphyrocephalus"
2	"Stamens 23-30 per flower; flowers ebracteolate; leaf blade very broadly ovate, broadly ovate, circular or transversely broadly elliptic, the venation parallelpinnate with 5-9 veins"	"Phymatocarpus interioris"