Haloragaceae
Fls small solitary and axillary or in spikes or panicles; hermaphrodite or unisexual, epig., regular; calyx-lobes 2-4 or 0; petals free, 8, 4, or 0; stamens 8, 4, or fewer, large for size of fl.; ovary 1- or 2- or 4-celled, us. with as many pend. ovules as styles; styles 1-4, free, stigmas papillose or plumose; fr. dry or succulent, ind. or separating into ind. 1-seeded nutlets. Annual to perennial herbs, sts woody, many aquatic; lvs simple, opp., alt. or whorled, us. notched or lobed, exstipulate. Cosmopolitan but with more representatives in Southern Hemisphere. About 7 genera and 160 spp.
Key
1
Fr. separating into 2-4 1-seeded nutlets, lvs often divided into capillary segs; aquatic
