Secondary thickening absent. Root anatomy . Root xylem without vessels. Reproductive type, pollination . Inflorescence, floral, fruit and seed morphology .
Inflorescences spatheate, or espatheate.
Perianth absent . Endothecium developing fibrous thickenings. The thickenings spiral. The initial microspore tetrads tetrahedral, or isobilateral. Gynoecium ostensibly 1 carpelled.