Juglandaceae, Walnut Family
Trees; leaves alternate, pinnately compound; leaflets serrate, gland·dotted beneath; axillary buds superposed; monoecious; flowers monosporangiate; corona absent; staminate flowers in pendulous aments from buds below leaves of current season, each subtended by an ament-bract; carpellate flowers solitary or few in a cluster terminal on leafy stem, epigynous., each subtended by an involucre of bracts; carpels 2, united. 1-loculed above, 2-4-loculed below; stigmas 2; fruit a nut., the hard shell (ovary wall) enclosed in and fused with, at least until maturity, the husk
(accrescent bracts and bypantbium); seed one, 2-lobed.