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Koenigia alaskana

From Wikipedia, the free encyclopedia

Koenigia alaskana
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Polygonaceae
Genus: Koenigia
Species:
K. alaskana
Binomial name
Koenigia alaskana
(Small) T.M.Schust. & Reveal [1]
Synonyms[1]
  • Aconogonon alaskanum (Small) Soják
  • Aconogonon hultenianum var. lapathifolium (Cham. & Schltdl.) S.P.Hong
  • Polygonum alaskanum (Small) W.Wight ex Hultén
  • Polygonum alpinum subsp. alaskanum (Small) S.L.Welsh
  • Polygonum alpinum var. lapathifolium Cham. & Schltdl.
  • Polygonum polymorphum var. lapathifolium (Cham. & Schltdl.) Ledeb.

Koenigia alaskana (synonym Aconogonon alaskanum, Persicaria alpina) is an Asian and North American species of flowering plant in the buckwheat family known by the common names Alaska wild-rhubarb and alpine knotweed.[2]

Description

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This herbaceous or semi-evergreen[2] perennial grows up to 2 meters (almost 7 feet) tall, with a woody root and lanceolate leaves. The abundant flowers are white, cream or pale green, borne in plumes in midsummer.[3] They are followed by pinkish seed-heads later in summer or in early autumn. However, in a garden setting they are usually cut back after flowering to preserve vigour.[2]

Distribution and habitat

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Koenigia alaskana is native to Alaska, the Yukon, and Magadan Oblast in the Russian Far East.[1]

Cultivation

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It is cultivated in areas with enough space for its substantial mounds of foliage. Under the name Persicaria alpina it has received the Royal Horticultural Society's Award of Garden Merit.[2]

References

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  1. ^ a b c "Koenigia alaskana (Small) T.M.Schust. & Reveal". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-02-23.
  2. ^ a b c d "Persicaria alpina". www.rhs.org. Royal Horticultural Society. Retrieved 24 January 2021.
  3. ^ Flora of North America, Aconogonon alaskanum (Small) Soják, 1974. Alaska wild-rhubarb