Asystasia gangetica

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Asystasia gangetica
Asystasia gangetica

Asystasia gangetica

Systematics
Euasterids I
Order : Mint family (Lamiales)
Family : Acanthus family (Acanthaceae)
Tribe : Justicieae
Genre : Asystasia
Type : Asystasia gangetica
Scientific name
Asystasia gangetica
( L. ) T. Anderson

Asystasia gangetica is a species of the Asystasia genuswithin the Acanthus family (Acanthaceae).

description

Habitus in the habitat in Gambia

Vegetative characteristics

Asystasia gangetica is a perennial herbaceous plant that often grows low and creeping , sometimes upright bushy and sometimes slightly woody. The irregularly pressed downy hairy stems are overhanging to upright.

The leaves are arranged opposite one another. thin leaf blades are egg to almost circular with a length of up to 6 centimeters with a blunt to almost heart-shaped blade base and a pointed upper end. The leaf margin is smooth. There are no stipules .

Generative characteristics

The terminal, racemose inflorescences are one-sided. The bracts and bracts are triangular with a length of 1 to 2 millimeters with a pointed upper end.

The hermaphrodite flowers are zygomorphic and fünfzählig with a double perianth (perianth). The five hairy calyx lobes are lanceolate-pointed with a length of 5 to 7 millimeters. The five purple, yellow or white, 3 to 4 centimeters long petals are fused into a 0.5 to 1 centimeter long, often slightly curved corolla tube, which ends with two lips with a width of about 15 millimeters. The upper lip is divided into two and the lower into three lobes. The lower middle corolla lobe is the largest and has purple points.

The capsule fruit is about 3 centimeters long. The light brown seeds are irregularly shaped like a disc.

The number of chromosomes is 2n = 26, 28 or 50.

As an invasive plant in Hawaii

Systematics and distribution

Habit of Asystasia gangetica subsp. micrantha

This species was first published in 1756 by Carl von Linné in Centuria II. Plantarum ... , page 3–4 as Justicia gangetica . It was put in 1860 by Thomas Anderson in George Henry Kendrick Thwaites: Enumeratio Plantarum Zeylaniae pp. 235-236 as Asystasia gangetica (L.) T. Anderson in the genus Asystasia . The specific epithet gangetica is derived from the river Ganges in India. Other synonyms for Asystasia gangetica (L.) T.Anderson are: Asystasia coromandeliana Burkill & CBClarke , Asystasia coromandeliana Nees .

Asystasia gangetica originally occurs from tropical to southern Africa and India. Asystasia gangetica is a neophyte in many areas of the tropics , for example in Australia . In many areas, especially on islands, it is considered an invasive plant .

There are roughly two subspecies:

  • Asystasia gangetica (L.) T. Anderson subsp. gangetica (Syn .: Ruellia zeylanica J.Koenig ex Roxb. , Asystasia comorensis Nees ): It originally only occurs in India.
  • Asystasia gangetica (L.) T. Anderson subsp. micrantha (Nees) Ensermu (Syn .: Asystasia bojeriana Nees , Asystasia comorensis Nees , Asystasia comorensis var. humilis Nees , Asystasia coromandeliana var. micrantha Nees , Asystasia intrusa flower , Asystasia micrantha (Nees) YFDeng & NHXia ): It comes originally in the tropical , in southern Africa and Madagascar.

Asystasia gangetica belongs to the genus Asystasia in the tribe Justicieae from the subfamily Acanthoideae in the family Acanthaceae .

use

In some parts of Africa the leaves are eaten as a vegetable.

Asystasia gangetica is also used as an ornamental plant.

Common name

The common name "Chinese violet" is also used in the English-speaking world .

swell

Individual evidence

  1. ↑ a b c d e f g h i data sheet Asystasia gangetica at Institute of Pacific Islands Forestry - Pacific Island Ecosystems at Risk (PIER) of Hawaii.
  2. ^ Asystasia gangetica at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
  3. ↑ a b c d e f Asystasia gangetica in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved December 26, 2017.
  4. ↑ a b c Asystasia gangetica at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed December 26, 2017.}
  5. ↑ GJHGrubben, OA Denton: Plant Resources of Tropical Africa 2. Vegetables. PROTA Foundation, Wageningen; Backhuys, Leiden; CTA, Wageningen, 2004.

Web links

Commons : Asystasia gangetica  - collection of images, videos and audio files