Bull's head pond rose
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Bull's head pond rose ( Nuphar variegata ) |
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The bull's head pond rose ( Nuphar variegata ) is a species of the water lily family (Nymphaeaceae).
features
The bull's head pond rose is a perennial herbaceous water plant . It is anchored with a rhizome that has a diameter of 2.5 to 7 cm in water depths of 50 to 80 centimeters. The petiole is flattened on top and winged on the edge. The floating leaf blade is broadly ovate to elongated, measures 7 to 35 × 5 to 25 centimeters and is 1.2 to 1.6 times as long as it is wide.
The hermaphrodite, radial symmetry flowers have a diameter of 2.5 to 5 centimeters. There are usually six sepals available. There are many spirally arranged petals . The seven to 28 scar rays end at the edge of the scar disc or 1 (to 1.5) millimeters earlier. The flowering period extends from May to August.
The mostly purple-tinted fruits have a length of 2 to 4.3 cm and a diameter of 2 to 3.5 cm and are strongly ribbed. The seeds are 2.5 to 5 mm in size.
The number of chromosomes is 2n = 34.
Occurrence
The bull's head pond rose occurs in temperate to cool North America in lakes, ponds, slow-flowing waters and ditches at altitudes up to 2000 meters. It is found in western, eastern, and northern Canada, the northern United States, Delaware, and northeast Maryland .
use
The bull's head pond rose is rarely used as an ornamental plant in garden ponds.
swell
literature
- Eckehart J. Jäger, Friedrich Ebel, Peter Hanelt, Gerd K. Müller (eds.): Rothmaler excursion flora from Germany. Volume 5: Herbaceous ornamental and useful plants . Spectrum Academic Publishing House, Berlin Heidelberg 2008, ISBN 978-3-8274-0918-8 .
Individual evidence
- ↑ Nuphar variegatum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ^ Nuphar in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved May 30, 2018.
