Trachelium caeruleum
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Campanulaceae
Genus: Trachelium
Species:
T. caeruleum
Binomial name
Trachelium caeruleum

Trachelium caeruleum, common name blue throatwort, is a species of flowering plant in the family Campanulaceae native to the Mediterranean, where its native range includes Algeria, Morocco, Portugal, Spain, and Sicily.[2] It has also become naturalized in a few areas, including New Zealand, the Azores, and parts of mainland Europe.[2]

Growing to 120 cm (47 in) tall by 30 cm (12 in) wide, it is a woody-based erect herbaceous perennial, with oval leaves and dense cushions of violet-purple flowers in summer.[3] The specific epithet caeruleum means "dark blue".[4]

In temperate climates this plant is usually grown as a half-hardy annual for summer bedding schemes or planters. It has gained the Royal Horticultural Society's Award of Garden Merit.[5][6] There are many cultivars with a variety of flower colors, including white, red, pink, and dark purple.[7]

References

  1. "International Plant Names Index". Retrieved 23 April 2013.
  2. 1 2 "Trachelium caeruleum". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 23 January 2018.
  3. RHS A-Z Encyclopedia of Garden Plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 978-1405332965.
  4. Harrison, L. (2012). RHS Latin for Gardeners. United Kingdom: Mitchell Beazley. p. 224. ISBN 9781845337315.
  5. "RHS Plant Selector - Trachelium caeruleum". Retrieved 13 March 2021.
  6. "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 102. Retrieved 23 December 2018.
  7. Liang, R. and B. K. Harbaugh. (2001). Evaluation of Trachelium cultivars as cut flowers. HortTechnology 11(2), 316-18.
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