Honeysuckle

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Honeysuckles are arching shrubs or twining vines in the genus Lonicera[2] (/lɒˈnɪsərə/[3]) of the family Caprifoliaceae. The genus includes 158 species[1] native to northern latitudes in North America, Eurasia, and North Africa.[1][4] Widely known species include Lonicera periclymenum (common honeysuckle or woodbine), Lonicera japonica (Japanese honeysuckle, white honeysuckle, jinyinhua in Chinese), Lonicera tragophylla (Chinese honeysuckle), and Lonicera sempervirens (coral honeysuckle, trumpet honeysuckle, or woodbine honeysuckle). L. japonica is a highly invasive species considered a significant pest in parts of North America, Europe, South America, New Zealand, Australia, and Africa.[4]

Some species are highly fragrant and colorful, so are cultivated as ornamental garden plants. In North America, hummingbirds are attracted to the flowers, especially L. sempervirens and L. ciliosa (orange honeysuckle).[5] Honeysuckle derives its name from the edible sweet nectar obtainable from its tubular flowers.[6] The name Lonicera stems from Adam Lonicer, a Renaissance botanist.[4]

Description

Honeysuckle (Lonicera japonica)
Wild honeysuckle buds in New York

Most species of Lonicera are hardy twining climbers, with a minority of shrubby habit.[4] Some species (including Lonicera hildebrandiana from the Himalayan foothills and L. etrusca from the Mediterranean) are tender and can be grown outside only in subtropical zones. The leaves are opposite, simple oval, 1–10 cm (0.39–3.94 in) long; most are deciduous but some are evergreen.

Many of the species have sweetly scented, bilaterally symmetrical flowers that produce a sweet, edible nectar, and most flowers are borne in clusters of two (leading to the common name of "twinberry" for certain North American species). Both shrubby and vining sorts have strongly fibrous stems which have been used for binding and textiles.

The fruit is a red, blue or black spherical or elongated berry containing several seeds; in most species the berries are mildly poisonous, but in a few (notably Lonicera caerulea) they are edible and grown for home use and commerce. Most honeysuckle berries are attractive to wildlife, which has led to species such as L. japonica and L. maackii spreading invasively outside of their home ranges. Many species of Lonicera are eaten by the larvae of some Lepidoptera species—see a list of Lepidoptera that feed on honeysuckles.

Invasive species

The spread of L. japonica in North America began in the United States in 1806, and it was widely cultivated by the 1860s.[4] It was first discovered in Canada in Ontario forests in 1976, and became invasive by 2007.[4] L. japonica was introduced in Australia between 1820 and 1840.[4]

Several species of honeysuckle have become invasive when introduced outside their native range, particularly in North America, Europe, South America, Australia, and Africa.[4] Invasive species include L. japonica, L. maackii, L. morrowii, L. tatarica, and the hybrid between the last two, L. × bella.[4][7]

Cultivation

Honeysuckles are valued as garden plants, for their ability to cover unsightly walls and outbuildings, their profuse tubular flowers in early summer, and the intense fragrance of many varieties. The hardy climbing types need their roots in shade, and their flowering tops in sunlight or very light shade. Varieties need to be chosen with care, as they can become substantial. Cultivars of the dense, small-leaved L. nitida are used as low, narrow hedges.[8]

The following hybrids have gained the Royal Horticultural Society's Award of Garden Merit:[9]

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Other cultivars are dealt with under their species names.

The honeysuckle species L. japonica is grown as a commercial crop for traditional Chinese medicine use.[citation needed]

Honeysuckle is also used to scent Chinese teas in a process similar to Jasmine tea. This was popularized in the Qing dynasty.[14]

Phytochemicals

Component analyses of berries from 27 different cultivars and 3 genotypes of edible honeysuckle (Lonicera caerulea var. kamtschatica) showed the presence of iridoids, anthocyanins, flavonols, flavanonols, flavones, flavan-3-ols, and phenolic acids.[15] While sugars determine the level of sweetness in the berries, organic acids and polyphenols are responsible for the sour taste and tartness.[15] Some 51 of the same compounds in berries are found in flowers, although the proportions of these compounds varied among cultivars studied.[16]

Interaction with other species

Many insects in the order Lepidoptera visit honeysuckles as a food source. An example of this is the moth Deilephila elpenor. This nocturnal species of moth is especially attracted to honeysuckles, and they visit the flowers at night to feed on their nectar.[17]

Species

158 species are accepted.[1]

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Several fossil species are known from the Miocene of Asia.[18]

References

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  1. ^ a b c d e Page Module:Citation/CS1/styles.css has no content."Lonicera L." Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. 2022. Archived from the original on 23 April 2024. Retrieved 28 April 2024.
  2. ^ Page Module:Citation/CS1/styles.css has no content."MeSH Browser". meshb.nlm.nih.gov. Retrieved 2026-05-01.
  3. ^ Sunset Western Garden Book, 1995:606–607
  4. ^ a b c d e f g h i Page Module:Citation/CS1/styles.css has no content."Lonicera japonica". CABI. 29 November 2018. Archived from the original on 19 March 2016. Retrieved 3 August 2019.
  5. ^ Page Module:Citation/CS1/styles.css has no content.Hayden, W. John (2014-04-01). "Humming Birds: Pollination Facts and Fancy". Bulletin of the Virginia Native Plant Society. 33 (2): 1–8. Archived from the original on 2026-04-25. Retrieved 2026-04-04.
  6. ^ Page Module:Citation/CS1/styles.css has no content."Honeysuckle". Merriam-Webster Dictionary. 2017. Archived from the original on 2009-04-21. Retrieved 2015-09-14.
  7. ^ Page Module:Citation/CS1/styles.css has no content.Fernald, Katrina M.; Curzon, Miranda T.; Harms, Tyler M. (2025-12-01). "Impacts of invasive honeysuckle removal on forest-breeding birds in western Central Hardwoods forests". Forest Ecology and Management. 597 123093. doi:10.1016/j.foreco.2025.123093. ISSN 0378-1127.
  8. ^ Page Module:Citation/CS1/styles.css has no content.RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1-4053-3296-5.
  9. ^ Page Module:Citation/CS1/styles.css has no content."AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 61. Archived (PDF) from the original on 5 January 2018. Retrieved 25 March 2018.
  10. ^ Page Module:Citation/CS1/styles.css has no content."RHS Plantfinder - Lonicera × heckrottii 'Gold Flame'". Archived from the original on 4 June 2020. Retrieved 25 March 2018.
  11. ^ Page Module:Citation/CS1/styles.css has no content."RHS Plantfinder - Lonicera 'Mandarin'". Archived from the original on 30 March 2018. Retrieved 25 March 2018.
  12. ^ Page Module:Citation/CS1/styles.css has no content."RHS Plant Selector - Lonicera x purpusii 'Winter Beauty'". Retrieved 29 October 2020.
  13. ^ Page Module:Citation/CS1/styles.css has no content."RHS Plant Selector - Lonicera x tellmannia". Archived from the original on 16 November 2020. Retrieved 29 October 2020.
  14. ^ Mair, Victor H.; Hoh, Erling (2009). The True History of Tea, ch. 9. Thames & Hudson, ISBN 978-0-500-25146-1
  15. ^ a b Page Module:Citation/CS1/styles.css has no content.Kucharska, A. Z.; Sokół-Łętowska, A; Oszmiański, J; Piórecki, N; Fecka, I (2017). "Iridoids, Phenolic Compounds and Antioxidant Activity of Edible Honeysuckle Berries (Lonicera caerulea var. kamtschatica Sevast.)". Molecules (Basel, Switzerland). 22 (3): 405. doi:10.3390/molecules22030405. PMC 6155291. PMID 28273885.
  16. ^ Page Module:Citation/CS1/styles.css has no content.Kula, M; Głód, D; Krauze-Baranowska, M (2016). "Application of on-line and off-line heart-cutting LC in determination of secondary metabolites from the flowers of Lonicera caerulea cultivar varieties". Journal of Pharmaceutical and Biomedical Analysis. 131: 316–326. doi:10.1016/j.jpba.2016.09.010. PMID 27622313.
  17. ^ Page Module:Citation/CS1/styles.css has no content.South, Richard (1907). The Moths of the British Isles. F. Warne & Company. p. 1. elephant hawk moth.
  18. ^ Page Module:Citation/CS1/styles.css has no content.Pavlyutkin, Boris I. (15 November 2015). "A New Species of Lonicera (Caprifoliaceae) from the Miocene of Primorye Region (the Russian Far East)". Botanica Pacifica. doi:10.17581/bp.2015.04218. Retrieved 30 January 2024.

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