Trees or shrubs, rarely herbs; leaves, flowers and fruits usually bearing numerous oil glands. Leaves opposite or alternate, simple or compound, exstipulate. Monoecious or dioecious; flowers actinomorphic, unisexual or bisexual, in axillary or terminal racemes, corymbs or panicles, sometimes solitary. Calyx 4-5-lobed. Petals 4-5, free, valvate or limbricate. Stamens 4-5 or 8-10 or more (Aegle and Citrus); filaments free or connate; in female flowers stamens reduced to staminodes. Ovary superior, of 4-5 or more free or connate carpels; in male flowers ovary reduced to pistillode. Fruit a capsule, cluster of follicles, berry or drupe; seeds solitary or few in each cell.
Unarmed shrubs or trees. Leaves pinnate; leaflets alternate. Flowers bisexual, in lateral or terminal corymbs. Calyx cup-shaped, 5-lobed. Petals 5, free, imbricate. Stamens 10, alternately longer and shorter. Ovary 2-5 celled, narrowed into style; stigma capitate. Berry oblong, 1 - 2 seeded.
Similar to M. paniculata but a shrub or tree to 3m; leaves 15-25 ( -30)cm; leaflets 13-23, ovate 1.5 - 6.5 x 0.8 - 2.5cm, acuminate, base ± asymmetriaclly rounded or cuneate, margins minutely crenate, sparsely pubescent or glabrous; corymbs with more numerous flowers; calyx 1mm; petals 5 x 1.5mm; stamens 4-5mm; style 5mm; fruit ovoid, 8 - 9 x 7 - 8mm, crimson.