Fig. 2.

Diagram of dichasial partial inflorescence in Quillaja saponaria (A), with fused and alternipetalous carpels; and Suriana maritima (B), with free and antepetalous carpels. Hatched shapes indicate subtending bracts and bracteoles; black shapes indicate sepals; white shapes indicate petals; grey shapes indicate stamens. lf, lateral flower; n, nectary; X, staminode.