Lilium rubellum Baker

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Lilium rubellum (乙女百合, otomeyuri, literally: virgin lily, or 姫小百合/姫早百合, himesayuri, literally: little princess lily) is a species of lily in the genus Lilium in the Oriental section

Lilium rubellum reaches a height of 30 cm to 60 cm and is therefore a very small species for lilies. The stem is hard and straight. The bulbs are small and ellipsoidal.

The leaves are narrow and lanceolate and distributed around the stem.

The plant blooms in June with up to six horizontal flowers. The hermaphroditic flowers are three-counted. The six similarly shaped petals (tepals) are curved outwards and 6 to 8 cm long. The basic colour of the flowers is a pure delicate pink without dots. Each flower contains three petals and six stamens. The anthers and filaments are of a clear yellow, the pollen is also yellow. The flowers smell heavy and very sweet and reach a total diameter of 5–6 cm. The seeds ripen in seed pods, which tear open laterally in August. The seed of Lilium rubellum germinates delayed-hypogeic, after a warm/cold/warm cycle (autumn/winter/spring), in which each period should be about two months long, with a slightly longer cold period.

Lilium rubellum is very similar to Lilium japonicum, but both species can be easily distinguished by the color of the stamens.

The species is very rare, endemic only to the island of Honshū in Japan. It is found in four prefectures: the southern part of Miyagi Prefecture, Niigata Prefecture, Fukushima Prefecture, and Yamagata Prefecture. In practice, however, Lilium rubellum is only found at the interface of the Iide Mountains and the Agatsuma Mountain around a peak called Sumon.

Lilium rubellum needs moist and acidic soil, it prefers to grow on high mountain meadows at altitudes between 700 and 1800 m above sea level. The natural habitats of this lily species have a long cold winter with a high snow cover.

Lilium rubellum Baker articles - Encyclopedia of Life (eol.org)

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