Nechamandra alternifolia

Nechamandra alternifolia
	Nechamandra alternifolia
Systematics
Class :	Bedecktsamer (Magnoliopsida)
	Monocots
Order :	Frog-spoon-like (Alismatales)
Family :	Frog bite family (Hydrocharitaceae)
Genre :	Nechamandra
Type :	Nechamandra alternifolia
Scientific name of the genus
	Nechamandra
	Planch.
Scientific name of the species
	Nechamandra alternifolia
	( Roxburgh ex Wight ) Thwaites

Nechamandra alternifolia is a species of the monotypic genus Nechamandra in the frog-bite family(Hydrocharitaceae).

description

Nechamandra alternifolia is a submerged , perennial, herbaceous plant. The stems are thin, elongated and heavily branched. The leaves are alternate, but also opposite at the base of the stem and tightly tufted towards the end of the stem. They are 2 to 7 inches long, 1 to 1.5 inches wide, linear, with a pointed end. The midrib does not protrude and differs only slightly from the other parallel leaf veins.

The plants are diocesan , the flowers unisexual. Male inflorescences are stalked and consist of 60 to 100 flowers. The inflorescence axis is translucent. The spathe is about 5 × 4 millimeters in size, membranous-translucent, egg-shaped and with two columns at the tip. The male flowers are tiny. Their thin flower stalk is about 0.6 millimeters long. The three sepals are corolla-like, egg-shaped, white and transparent. The three petals are small and about the same size as the sepals. The two or three stamens are arranged opposite the sepals. The stamens are thin and about 0.3 millimeters long. The spathe of the female flowers is about 5 millimeters in size, tubular, sessile and has only one flower. The female flowers are similar to the male. The sepals are 0.5 to 1 × 0.4 to 0.7 millimeters in size. The ovaries are 5 to 10 millimeters in size, elongated, flattened and elongated at the tip into a beak. The three styles are edged at the tip and densely covered with papillae. The fruit is oval-elongated or linear. The seeds are numerous, elongated, and tiny.

The species blooms and produces fruit in September and October.

The number of chromosomes is 2n = 16.

Occurrence

Nechamandra alternifolia occurs in the southern Chinese provinces of Guangdong and Guangxi , in India , Nepal , Sri Lanka , Bangladesh , Thailand , Burma and Vietnam . It also thrives on Socotra . It grows in ponds and lakes as well as slowly flowing rivers and canals.

supporting documents

literature

Qingfeng Wang, Youhao Guo, Robert R. Haynes, C. Barre Hellquist: Nechamandra . In: Wu Zheng-yi, Peter H. Raven, Deyuan Hong (Eds.): Flora of China . Volume 23: Acoraceae through Cyperaceae . Science Press / Missouri Botanical Garden Press, Beijing / St. Louis 2010, ISBN 978-1-930723-99-3 , pp. 100 (English). , PDF file , genre , type online .

Individual evidence

^ Tropicos. [1]
↑ Rafaël Govaerts (ed.): Nechamandra alternifolia. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved August 21, 2016.

Web links

Nechamandra alternifolia inthe IUCN 2013 Red List of Threatened Species . Posted by: Juffe Bignoli, D, 2010. Retrieved January 7, 2014.

[Tropicos-1] Tropicos. [1]

[WCSP-2] Rafaël Govaerts (ed.): Nechamandra alternifolia. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved August 21, 2016.