Rutaceae
A natural order of gland-dotted shrubs or trees, very rarely herbs, scattered over the temperate in South Africa and Australia. Flowers usually hermaphrodite; sepals four or five, imbricated, free or connate; petals four or five, hypogynous or perigynous, broadly imbricated, rarely valvate; stamens inserted at the base or on the margins of the torus, four or five, or eight or ten, very rarely fewer or indefinite; style short or elongated, distinct or connate; inflorescence variable, very rarely spicate or umbellate, in most cases cymose and axillary. Fruit a capsule or berry, rarely a drupe. Leaves exstipulate, usually opposite, simple or often compound, one, three, or five-foliolate or pinnate, frequently entire, occasionally serrulated; petioles sometimes biglandular at base. Ruta graveolens (Rue), grown in most gardens, is remarkable for its strong smell and acrid taste. Citrus is the most celebrated genus, on account of its fruits (Orange, Lemon, Lime, &c.); a volatile oil, obtained by distillation of the flowers and epicarp, and dissolved in alcohol, produces the well-known Eau de Cologne. The berries of some other genera from China and Japan are edible, as AEgle Marmelos, Cookia punctata, Glycosmis citrifolia, Triphasia trifoliata, &c. The order comprises about eighty-three genera and 650 species. Examples: Citrus, Correa, Crowea, Ruta.