- Onagraceae
Key to the genera of Onagraceae
1Annual or perennial herbs; sepals green, not petaloid; fruit dry, upright, dehiscent2 2Sepals caducous after anthesis3 2Sepals persistent (creeping, mud- or water-plants)Ludwigia → 3Fruit dehiscent and usually many-seeded4 4Expanded flower generally less than 2.5 cm across, hypanthium to c. 2 mm long, not or hardly prolonged above ovary; seeds often with an apical hair-tuftEpilobium → 4Expanded flower usually more than 2.5 cm across, hypanthium at least 4 mm long, prolonged above ovary; seeds lacking hair-tuftsOenothera → From: Jeanes, J.A. (1996). Onagraceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria. Vol. 3. Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
