Cirsium rivulare is a species of flowering plant in the family Asteraceae, native to eastern and western Europe, adventive in Britain, and naturalised in Sweden and Belgium.[1]
| Cirsium rivulare | |
|---|---|
| |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Cirsium |
| Species: | C. rivulare
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| Binomial name | |
| Cirsium rivulare | |
Growing to 1.5 m (4.9 ft) tall, this erect herbaceous perennial is a clump-forming thistle, with narrow grey-green prickly leaves and small purple globular flowerheads in early to midsummer.[2]
The Latin specific epithet rivulare means "brook loving".[3] The plant prefers moist conditions but can tolerate some dryness.
The cultivar Cirsium rivulare 'Atropurpureum', with deep crimson flowers, has received the Royal Horticultural Society's Award of Garden Merit.[4] It is very hardy down to at least −20 °C (−4 °F) (RHS rating H7), and thrives in full sun.
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Bee on 'Atropurpureum' flower -
References
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- ^ "Cirsium rivulare". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture.
- ^ Brickell, Christopher (2008). The Royal Horticultural Society A-Z encyclopedia of garden plants (3rd ed.). United Kingdom: Dorling Kindersley. ISBN 9781405332965.
- ^ Harrison, Lorraine (2012). RHS Latin for Gardeners. United Kingdom: Mitchell Beazley. ISBN 184533731X.
- ^ "Cirsium rivulare 'Atropurpureum'". RHS. Retrieved 12 April 2020.
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