Internal phloem absent. Included' phloem absent. Xylem with libriform fibres. Vessel end-walls simple. Reproductive type, pollination .
Fertile flowers hermaphrodite .
Inflorescence, floral, fruit and seed morphology . The floral irregularity involving the perianth and involving the androecium. Free hypanthium absent. Androecium exclusively of fertile stamens. Fertile stamens representing the lateral pairs.