Japanese ysander
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Japanese ysander ( Pachysandra terminalis ) |
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| Pachysandra terminalis | ||||||||||||
| Siebold & Zucc. |
Japanese Ysander ( Pachysandra terminalis ), often also called Dickmännchen , Dickanthere , Schattengrün or simply Ysander or Pachysandra after the genus , is a species of the boxwood family (Buxaceae). It originally comes from the forests of Japan and China .
description
The Japanese ysander grows upright or creeping as an evergreen subshrub and reaches heights of up to 30 cm. There are rhizomes formed. The short-stalked (1 to 3 cm) leaves are alternately four to six close together. The leathery leaf blade has a size of 2.5 to 5 (rarely up to 9) × 1.5 to 3 (rarely 6) cm. The leaf margin is not more than about the upper half serrated, the rest is smooth.
The Japanese Ysander is monoecious ( monoecious ). All varieties form from February 2 to 4 cm long, terminal, erect, candle-like, spiked inflorescences with smooth bracts . Usually the inflorescences contain more than 15 male and one or two female flowers. The small, white, unisexual flowers are four-fold. The male flowers have four bracts , four stamens with about 7 mm long stamens and a 0.6 mm long sterile pistil. The female flowers, which are usually located in the lower area of the inflorescence, contain four to six bracts, a two- to three-fold, upper ovary and two to three free thick styles with bent back stigmas. The egg-shaped stone fruit is about 5 to 6 mm in size and still has the style when it is ripe. The seed is black.
The number of chromosomes is 2n = 24 or 48.
ingredients
The Japanese ysander is poisonous; like boxwood , it contains steroid alkaloids , including pachystermin A and pachysamine A.
Use as an ornamental plant
In partially shaded and shady locations, Japanese ysander forms a dense, planar vegetation on almost all soils. Therefore, it has also become a popular ground cover in parks and gardens in Europe for many years . The undemanding plant spreads very quickly through subterranean runners and is particularly suitable for underplanting larger trees .
In gardens and parks, varieties of Pachysandra terminalis var. Terminalis and Pachysandra terminalis var. Compacta (only 15 to 20 cm high) are cultivated. There is also a variegated variety.
literature
- Tianlu Min & Paul Brückner: Flora of China , Volume 11, p. 321: Pachysandra terminalis - Online. (engl.)
Individual evidence
- ↑ Eckehart J. Jäger, Friedrich Ebel, Peter Hanelt, Gerd K. Müller (eds.): Exkursionsflora von Deutschland . Founded by Werner Rothmaler. tape 5 : Herbaceous ornamental and useful plants . Springer, Spektrum Akademischer Verlag, Berlin / Heidelberg 2008, ISBN 978-3-8274-0918-8 .
- ↑ Pachysandra terminales in the National Plant Germplasm System (NPGS)
- ↑ Pachysandra terminalis at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
