Persicaria affinis

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Himalayan knotweed
Himalayan knotweed (Persicaria affinis)

Himalayan knotweed ( Persicaria affinis )

Systematics
Class : Bedecktsamer (Magnoliopsida)
Order : Clove-like (Caryophyllales)
Family : Knotweed family (Polygonaceae)
Subfamily : Polygonoideae
Genre : Persicaria
Type : Himalayan knotweed
Scientific name
Persicaria affinis
( D.Don ) Ronse Decr.

Persicaria affinis ( syn.Polygonum affine ), also known as Himalayan knotweed , snail knotweed and carpet knotweed , is a species of covered seed plants (Magnoliopsida) withinthe knotweed family (Polygoneae) , which originally came from the Himalaya Mountains (also on Parts of the national territory of Tibet , Nepal , India , Pakistan and Kashmir ).

description

Persicaria affinis is characterized by strong growth near the ground, densely hairy leaves and stems and their tendency to form a carpet, with heights of approx. 25 cm and widths of 60 cm being reached as a rule. Its thin, oval leaves, which are approx. 3–8 cm long, are clearly visible whitish in color through a layer of wax on the underside, and their strong main shoot runs in a thin stem. In addition, the leaf margins are characterized by slight to clearly visible serrations. From midsummer to autumn, for example, Persicaria affinis forms numerous pale pink and rose- red flowers at the tips of their stems , which join together to form elongated flower assemblies, which vary in length between 5 and 7.5 cm. The shoots, at the ends of which the flowers are located, are approx. 5 to 25 cm long and have significantly smaller leaves than the other shoots. The stamens of the flowers protrude slightly laterally from the flower umbrella. After the flowers have wilted, it usually takes all winter until they have completely fallen off the plant.

distribution

The natural range of Persicaria affinis is limited to the Himalaya Mountains between Pakistan and Eastern Nepal at altitudes of 3000 to 4800 m.

Cultivation

Persciaria affinis is mainly used for decorative floor greening on different occasions. Due to their low climatic growth requirements, the Royal Horticultural Society honored the following cultivars with the Award of Garden Merit (AGM) for their persistence in the British climate :

  • "Darjeeling Red"
  • "Donald Lowndes"
  • "Superba"

Individual evidence

  1. ↑ Brickell, Christopher., Royal Horticultural Society (Great Britain): AZ encyclopedia of garden plants . [3rd ed.]. Dorling Kindersley in association with the Royal Horticultural Society, London 2008, OCLC 299238159 .
  2. ^ Polygonum affine in Flora of China @ efloras.org. Retrieved December 22, 2018 .
  3. ^ GB Wallace: Second List of Fungi and Diseases of Economic Plants in Tanganyika Territory . In: Bulletin of Miscellaneous Information (Royal Gardens, Kew) . tape 1936 , no. 3 , 1936, ISSN  0366-4457 , p. 234 , doi : 10.2307 / 4115065 .
  4. ↑ Bryan Stroube: Literary freedom . In: Crossroads . tape 10 , no. 1 , September 1, 2003, ISSN  1528-4972 , p. 3–3 , doi : 10.1145 / 973381.973384 .
  5. ^ Cowell, John Richard, (April 30, 1933-16 July 1998), Secretary, Royal Horticultural Society, 1975-88 . In: Who Was Who . Oxford University Press, December 1, 2007.
  6. ^ RHS Plant Selector: Persicaria affinis "Darjeeling Red". Retrieved December 22, 2018 .
  7. ^ RHS Plant Selector: Persicaria affinis "Donald Lowndes". Retrieved December 22, 2018 .
  8. ↑ RHS Plant Selector: Persicaria affinis "Superba". Retrieved December 22, 2018 .

Web links

Commons : Persicaria affinis  - Collection of images, videos and audio files