Blyxa aubertii
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Blyxa aubertii is a species of plant from the frog-bite family(Hydrocharitaceae).
description
The stems are shortened. The leaves are arranged in a basal rosette , linear, 5 to 17 (rarely up to 60) centimeters × 4 (rarely up to 12) millimeters in size, have 5 to 9 veins and a pointed end. The spathe are green and 3 to 5 centimeters × about 2 millimeters in size. Their stem is 2.7 to 8 inches long. The flowers are bisexual. The sepals are greenish purple, linear-lanceolate and 5 to 7 × about 1 millimeter in size. The petals are 9 to 17 × about 0.5 millimeters in size. There are 3 stamens . The stamens are 3 to 6 millimeters long, the anthers 1 to 1.8 millimeters. The ovary is tightly cylindrical and 2.5 to 4 centimeters in size. The stylus are about 7 millimeters in size. The fruits measure 4 to 6 (rarely from 2 to 8) centimeters. The 30 to 70 seeds are oblong-egg-shaped, six to twelve-ribbed and measure 1.2 to 1.8 × approx. 0.6 millimeters.
The species blooms and produces fruit from May to September.
The number of chromosomes is 2n = 16, 24 or 40.
Occurrence
Blyxa aubertii grows in rice fields and canals. The species occurs in India, Sri Lanka, Nepal, Bhutan, Bangladesh, Myanmar, Thailand, Malaysia, Indonesia, Papua New Guinea, Philippines, Vietnam, China (Fujian, Guangdong, Guangxi, Hainan, Hunan, Jiangxi, Sichuan, Yunnan, Zhejiang ), Taiwan, Korea and Japan (Ryukyu Islands), and Africa and Australia. The species was introduced in North America.
Systematics
Blyxa aubertii , named after its discoverer Louis Marie Aubert Du Petit-Thouars , was first described by Louis Claude Marie Richard in 1814 . A synonym is Blyxa ecaudata Hayata . German trivial names are Aubert's threadwort and smooth or hedgehog-seeded threadwort .
Sources and literature
- Qingfeng Wang, Youhao Guo, Robert R. Haynes, C. Barre Hellquist: Blyxa aubertii . In: Flora of China Vol. 23 Hydrocharitaceae , pp. 98 + 99 ( online ).
- Christel Kasselmann : aquarium plants. Ulmer Verlag, Stuttgart 1999, ISBN 3-8001-7454-5 , p. 151 f.
Individual evidence
- ↑ Blyxa aubertii at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
Web links
- Blyxa aubertii inthe IUCN 2013 Red List of Threatened Species . Posted by: Gupta, AK, 2010. Retrieved January 7, 2014.