 The flowers may have four or five faintly connate but imbricate sepals with an equal number of distinct, imbricate petals.Also, the stamens, that may contain nectar discs, have distinct glabrous filaments that occur in one or two whorls and in numbers equaling or twice the number of petals; the tricolporate pollen is contained within two locules of the anthers that open longitudinally along slits.The gynoecium contains three to five connate carpels, one style, and one stigma that is head-like to lobed.