Leaf anatomy . Stem anatomy . Secondary thickening absent. Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology .
Inflorescences usually cincinni .
Hypogynous disk absent. Petals shortly clawed. Androecium exclusively of fertile stamens. Endothecium developing fibrous thickenings. The initial microspore tetrads tetrahedral, or isobilateral.