Red onion (scientific name: Eleutherine bulbosa (Mill.) Urb.) is a red onion of the family Iris.
The leaves are mostly lanceolate or broad-lanceolate, and umbel-like cymes are born at the top of the stem.
Perennial herb. The bulb is ovoid, about 2.5 cm in diameter, with thick scales, purplish red, and no membranous coating. The roots are tender and yellowish brown. The leaves are broadly lanceolate or broadly strip-shaped, 25-40 cm long and 1.2-2 cm wide. The base is wedge-shaped, the tip is tapered, and 4-5 longitudinal veins are parallel and protruded, so that the surface of the leaf presents obvious wrinkles. The stems are 30-42 cm high, with 3-5 branches on the upper part, and leafy bracts on the branches. The sepals are 8-12 cm long and 5-7 mm wide; umbel-like cymes Flowers at the top of the stalk; flowers under bracts 2, ovoid, membranous; flowers white, no obvious perianth tube, perianth segments 6, 2 rounds arranged, inner and outer perianth segments nearly equal, inverted Staples; stamens 3, anthers "D" shaped, filaments inserted at base of perianth segments; apate 3-locate, ovate long ovate, 3-locate. Flowering in June.
For folk herbal medicine, it is effective for treating palpitations, dizziness, traumatic bleeding, and dysentery.