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Crinum asiaticum, commonly known as poison bulb, giant crinum lily, grand crinum lily, or spider lily, is a plant species widely planted in many warmer regions as an ornamental. It is a bulb-forming Perennial plant producing an umbel of large, showy flowers that are prized by gardeners. However, all parts of the plant are poisonous if ingested. Some reports indicate exposure to the sap may cause skin irritation.
Crinum asiaticum is native to East Asia, tropical Asia, Australia and islands of the Pacific and western Indian oceans. It is naturalized in Mexico, the West Indies, the US (Florida and Louisiana), numerous Pacific islands, Madagascar and the Chagos Archipelago.
Description
Crinum asiaticum is a perennial herb that typically grows up to tall. It has a leaf base. Its pseudobulb is spherical. The upper part of the bulb is cylindrical. The base is laterally branched, with a diameter of about . Its leaves are lanceolate, margin undulate, apically acuminate. They feature 1 sharp point and are dark green, growing up to 1 m long. Their width is or wider and they number 20–30. The inflorescence is an umbel with 10-24 flowers, six petaloid tepals, and aromatic. The flower stem is erect, as long as the leaf, and solid. The spathe is lanceolate, membranous, and . The bractlet liner is . Its perianth tube is slender and straight, green white, , diameter 1.5–2 mm. The corolla is spider-like shaped, white, linear, revolute, attenuate, long, and 6–9 mm wide. The corolla is 6-lobed. The pedicel is ca. long. It has 6 reddish stamens. The filaments are long. The anthers are liner, attenuate, ca. long or more. The ovary is fusiform, and up to long. The fruit is an oblate capsule, green, and in diameter. The seeds are large, and the exotesta is spongy. The Queen Emma lily, a giant subspecies ( Crinum asiaticum subsp. asiaticum) has flowers up to diameter) which are a deeper shade of pink, and borne on a plant up to height.
Toxicity
The entire plant is toxic, especially the bulb. It contains a variety of such as lycorine and tazettine. When eaten, it can cause vomiting, abdominal pain, severe diarrhea, constipation, irregular breathing, rapid pulse, fever, etc.; sufficient misuse can cause nervous system paralysis and death.
Use
The Tao people indigenous to Taiwan's Orchid Island uses slices of its stem (known as vakong) tied to a heavy object to bait fish going into their nets. The Paiwan people and Puyuma people peoples use this plant ( livakong) as a natural boundary plant.
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