Salix cinerea
| Salix cinerea | |
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| Salix cinerea subsp. cinerea, Germany | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Salicaceae |
| Genus: | Salix |
| Species: | S. cinerea
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| Binomial name | |
| Salix cinerea | |
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| Distribution map | |
Salix cinerea (common sallow, grey sallow, grey willow, grey-leaved sallow, large grey willow, pussy willow, rusty sallow[2]) is a species of willow native to Europe and western Asia.[3][4]
The plant provides a great deal of nectar for pollinators. It was rated in the top 10, with a ranking of second place, for most nectar production (nectar per unit cover per year) in a UK plants survey conducted by the AgriLand project which is supported by the UK Insect Pollinators Initiative.[5]
Plant
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It is a deciduous shrub or small tree growing 4–15 metres (13–50 ft) tall. The leaves are spirally arranged, 2–9 cm (1–3+1⁄2 in) long and 1–3 cm (1⁄2–1+1⁄2 in) broad (exceptionally up to 16 cm long and 5 cm broad), green above, hairy below, with a crenate margin. The flowers are produced in early spring in catkins 2–5 cm long; it is dioecious with male and female catkins on separate plants. The male catkins are silvery at first, turning yellow when the pollen is released; the female catkins are greenish grey, maturing in early summer to release the numerous tiny seeds embedded in white cottony down which assists wind dispersal.[3][4]
The closely related species Salix atrocinerea Brot., which overlaps in distribution in France, Belgium, Netherlands, England and Ireland, is considered by some authors as the subspecies S. c. oleifolia (Gaudin) Macreight [3][4]. Despite the coexistence of these two nomenclatures, the main taxonomic databases regard S. c. oleifolia as synonym of S. atrocinerea [6][7].
Ecology
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It usually grows in wetlands. The two subspecies differ slightly in requirements, with S. c. cinerea generally restricted to basic marshland and fen habitats, while S. c. oleifolia is less demanding, occurring in both alkaline marshes and acidic bogs and streamsides.[3] A common herbivore of Salix cinerea is Phratora vulgatissima, which prefers and is more common on female plants.[8] Anthocoris nemorum, a natural enemy of Phratora vulgatissima, is also more common on S. cinerea.[8]
Invasive species
[edit]Salix cinerea is an invasive species in New Zealand and is listed on the National Pest Plant Accord, which means it cannot be sold or distributed. S. cinerea is also highly invasive in south-eastern Australia,[9] with the entire genus listed as a Weed of National Significance. The species was introduced to stop erosion along riverbanks, but has since caused worse erosion over time by widening and shallowing invaded streams.
References
[edit]- ^ Lansdown, R.V. (2014). "Salix cinerea". IUCN Red List of Threatened Species. 2014: e.T19620468A19621296. doi:10.2305/IUCN.UK.2014-1.RLTS.T19620468A19621296.en. Retrieved 11 April 2024.
- ^ "Queensland Government Fact Sheet". Retrieved 24 April 2019.
- ^ a b c d Meikle, R. D. (1984). Willows and Poplars of Great Britain and Ireland. BSBI Handbook No. 4. ISBN 0-901158-07-0.
- ^ a b c Christensen, K. I., & Nielsen, H. (1992). Rust-pil (Salix cinerea subsp. oleifolia) - en overset pil i Danmark og Skandinavien. Dansk Dendrologisk Årsskrift 10: 5-17.
- ^ "Which flowers are the best source of nectar?". Conservation Grade. 2014-10-15. Archived from the original on 2019-12-14. Retrieved 2017-10-18.
- ^ "Salix cinerea subsp. oleifolia (Gaudin) Macreight". Plant of the World Online. Retrieved 25 September 2024.
- ^ "Salix atrocinerea Brot". WFO Plant List. Retrieved 25 September 2024.
- ^ a b Kabir, Faisal MD; Moritz, Kim K; Stenberg, Johan A. (2015-04-19). "Plant-sex-biased tritrophic interactions on dioecious willow". Ecosphere. 5 (12): art153. doi:10.1890/ES14-00356.1.
- ^ Cremer, K. W. (2003) Introduced willows can become invasive pests in Australia. Biodiversity, 4, 17-24.
External links
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Media related to Salix cinerea at Wikimedia Commons
Data related to Salix cinerea at Wikispecies- "Salix cinerea". Plants for a Future.
| Authority control databases: National |
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