Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology . Inflorescences usually cincinni . Floral receptacle with neither androphore nor gynophore . Hypogynous disk absent.
Calyx lobes markedly longer than the tube.
Petals shortly clawed. Androecium exclusively of fertile stamens . Endothecium developing fibrous thickenings. The initial microspore tetrads tetrahedral, or isobilateral. Tapetum glandular, or amoeboid.