Tibetan primrose
| Tibetan primrose | ||||||||||||
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Tibetan primrose (Primula florindae) |
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| Primula florindae | ||||||||||||
| Kingdon-Ward |
The Tibet Primrose ( Primula florindae ) is a plant from the family of the Primrose family (Primulaceae). It is native to Tibet and is used as an ornamental plant.
description
Appearance and foliage leaf
The Tibetan primrose is a perennial herbaceous plant with heights of 30 to 120 centimeters.
The leaves standing together in a basal rosette are divided into a petiole and a leaf blade. The petiole has a length of 3 to 30 centimeters. The thin, paper-like, bare leaf blade is 3 to 15 (to 20) centimeters long and 4 to 11 (to 15) centimeters wide, ovate-elongated to elliptical and heart-shaped at the base of the blade. The upper side of the leaf is bare and the underside of the leaf is sparsely tiny, hairy glandular. The edge of the spreader is serrated to separate water and the tip of the spreader is rounded.
Generative characteristics
The flowering period extends from June to July. The sturdy, 30 to 120 centimeter long inflorescence stem is glabrous or occasionally slightly floury in the upper area. The umbellate inflorescence contains 15 to 30 (10 to 80) flowers and with a length of 1 to 3 centimeters wide lanceolate to elongated, often serrated bracts , which are humped at their base. The more or less yellow floury flower stalks are 2 to 10 centimeters long.
The hermaphroditic flowers are radial symmetry and five-fold with a double flower envelope . The five 8 to 10 millimeter long sepals are bell-shaped up to about two thirds of their length and are abundantly yellow floury; the calyx teeth are triangular with a sharp tip. The 1.7 to 2.5 cm large crown is colored yellow and often turns green when drying (i.e. with herbarium specimens ). The 1 to 2 centimeter wide coronet has obovate-elongated to broadly obovate, slightly edged corolla lobes. The flowers are heterostyl : either the crown tube slightly longer than the calyx , the stamens arise about 2.5 millimeters above the base of the corolla tube and the pen is about as long or slightly longer than the corolla tube or the corolla tube about twice as long as the calyx, the stamens arise from the uppermost area of the corolla tube and the style is about 1.5 mm long.
The cylindrical fruit capsule is slightly longer than the calyx. The fruits ripen between July and August.
The number of chromosomes is 2n = 22.
distribution
The Tibetan primrose comes from eastern Tibet . It grows there at altitudes between 2600 and 4000 meters and populates wet areas such as river banks, swamp edges and wet spruce forests.
Systematics
The first description of Primula florindae in 1926 by Kingdon-Ward in Notes from the Royal Botanic Garden, Edinburgh , Volume 15, 72, pp 84-85. Primula florindae belongs to the section Sikkimensis in the subgenus Aleuritia within the genus Primula .
use
The Tibetan primrose is used as an ornamental plant.
swell
- Qiming Hu, Sylvia Kelso: Primulaceae . In: Wu Zheng-Yi, Peter H. Raven (Ed.): Flora of China . Myrsinaceae through Loganiaceae. Volume 15. Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 1996, ISBN 0-915279-37-1 , Primula florindae , pp. 149 (English, Primula florindae - online ). (Section Description and Distribution)
Individual evidence
- ^ A b Primula florindae in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
