Lycoris radiata
| Red spider lily 曼珠沙華 |
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| Lycoris radiata | |
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Amaryllidaceae |
| Subfamily: | Amaryllidoideae |
| Genus: | Lycoris |
| Species: | L. radiata |
| Binomial name | |
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Lycoris radiata (L'Hér.) Herb. |
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Lycoris radiata, known as red spider lily, red magic lily, or in Chinese mànzhū shā huá (曼珠沙華), is a plant in the amaryllis family, Amaryllidaceae, subfamily Amaryllidoideae. Originally from China, Korea and Nepal, it was introduced into Japan and from there to the United States and elsewhere. It is considered naturalized in Seychelles and in the Ryukyu Islands. It flowers in the late summer or autumn, often in response to heavy rainfall. The common name hurricane lily refers to this characteristic, as do other common names, such as resurrection lily; these may be used for the genus as a whole.
Lycoris radiata is a bulbous perennial. It normally flowers before the leaves fully appear, on stems 30–70 centimetres (12–28 in) tall. The leaves are parallel-sided, 0.5–1 centimetre (0.20–0.39 in) wide with a paler central stripe. The red flowers are arranged in umbels. Individual flowers are irregular, with narrow segments which curve backwards, and long projecting stamens.
The presumed original form of Lycoris radiata, known as L. radiata var. pumila, occurs only in China. It is a diploid, with 11 pairs of chromosomes (2N = 22), and is able to reproduce by seed. Triploid forms, with 33 chromosomes, are known as L. radiata var. radiata. These are widespread in China and also in Japan, from where the species was introduced into cultivation in America and elsewhere. The triploid forms are sterile, and reproduce only vegetatively, via bulbs. The Japanese triploids are genetically uniform. It has been suggested that they were introduced into Japan from China along with rice cultivation.
In phylogenetic analyses based on chloroplast genes, Hori et al. found that all the other species of Lycoris they examined were nested within Lycoris radiata. They suggest that the "species" of Lycoris presently recognized may not be distinct.
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