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1 Flowers 4-merous; [section Oligadenia]. | |
2 Petals 1.5-2.5 mm long; bracts subtending the pedicels diaphanous; young growth completely glabrous; [section Oligadenia; series Arbusculae] | |
2 Petals 3.5-5 mm long; bracts subtending the pedicels herbaceous; young growth (especially the bracts and the raceme axis) papillose; [section Oligadenia; series Anisandrae] | |
1 Flowers 5-merous. | |
4 Bracts of the raceme lanceolate to ovate, exceeding the pedicel; disk synlophic, paralophic, or hololophic; young growth glabrous or papillose; [section Oligadenia; series Anisandrae]. | |
5 Young growth glabrous (except sometimes papillose on the raceme axis); disk synlophic; flowers with 5 antesepalous stamens and 0 antepetalous stamens | |
5 Young growth papillose; disk hololophic to paralophic; flowers with 4-5 antesepalous stamens and 0-4 antepetalous stamens | |