Lilium distichum
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Lilium distichum |
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Lilium distichum is a species from the genus of lilies ( Lilium ) in the Martagon section .
description
Lilium distichum is a perennial, herbaceous plant and reaches a height of 50 to 120 centimeters. The bulbs are broadly egg-shaped and reach a height of 2.5 to 3 centimeters with a diameter of 2.5 centimeters to 4 centimeters. They consist of numerous white, egg-shaped-lanceolate scales, which are 1.5 to 2 centimeters long, 4 to 6 millimeters wide, loosely one above the other and movable at the base.
The hairy stem is papillae , weakly grooved and hollow below the whorl .
Almost all the leaves are arranged in the middle of the stem in a whorl of seven to nine, rarely up to twenty hairless leaves. They are inversely ovate-lanceolate to narrowly elongated-round-lanceolate, 5 to 15 centimeters long and 1 to 4 centimeters wide, taper towards the base to a winged petiole , taper to a point and are often prickly. The leaves are dark green and slightly membranous on the edge.
Below the whorl there are only one or two membranous leaves, which are often missing, above there are a few more freely distributed, small bracts . The bracts are largely the same as the leaves, lanceolate, 1 to 2.5 centimeters long and 3 to 6 millimeters wide.
Lilium distichum blooms from July to August with two to twelve nodding or horizontal, odorless flowers in a panicle . The upright flower stalks are 3 to 8 inches long. The six identical bloom cladding sheets (tepals) are lanceolate, slightly turned back, 3.5 to 4.5 centimeters long and 5 to 13 millimeters wide, nailed at the base. At the outer end they are thickened, they are - with the exception of the nectaries - papillary, their basic color is pale vermilion with purple dots. The lower pair of tepals is bent to the side. The stamens are significantly shorter than the bracts, the orange-yellow stamens are 20 to 25 millimeters long and smooth, the anthers are also orange-yellow, linear and up to 10 millimeters long. The ovary is 5 to 9 millimeters long and 2 to 3 millimeters thick, the slightly curved to straight stylus is twice as long as the ovary. The scar is round and three-lobed.
The seeds ripen in September in 2 centimeters long and 1.5 centimeters wide, inverted egg-shaped and weakly winged seed capsules and germinate with a delay - hypogeic .
The number of chromosomes is 2n = 24.
distribution
The species is native of the People's Republic of China in the provinces of Heilongjiang , Jilin and Liaoning as well as in South and North Korea and the Russian Primorye region .
Lilium distichum prefers locations with weakly acidic, volcanic soils on wooded slopes, forest edges or slopes on flowing waters at altitudes between 200 and 1800 meters. It is rare in South Korea, where occurrences are reported to have grown under broad-leaved deciduous trees in 70 to 80% shade.
Systematics
Lilium distichum was first described by Takenoshin Nakai in 1915 , the species epithet refers to the lateral spreading of the lower pair of tepals. Morphologically, the species occupies a position between the closely related Lilium tsingtauense (bowl-shaped flower) and Lilium medeoloides (much more strongly turned-back bracts), all species also differ in their distribution areas. Only in the south of South Korea do the areas of Lilium distichum and Lilium tsingtauense overlap , where natural hybrids occur, which were previously classified as a separate species Lilium miquelianum .
proof
- Flora of China , Vol. 24, p. 138, online
- Stephen G. Haw: The Lilies of China. 1986, pp. 130-131, ISBN 0-88192-034-7
- Mark Wood, Lily Species - Notes and Images. CD-ROM, version of July 13, 2006
Individual evidence
Most of the information in this article has been taken from the sources given under references; the following sources are also cited:
- ^ Tropicos. [1]
- ↑ Young Jin Kim: Lily Industry And Research, And Native Lilium Species In Korea In: Jong Suk Lee, Mark S. Roh: (Ed.) International Symposium on the Genus Lilium: Taejon, Korea August 28 - September 1, 1994. , Wageningen, International Society for Horticultural Science, 1996, ISBN 90-6605-977-X , p. 71