Cymbalaria muralis, commonly called ivy-leaved toadflax[3] or Kenilworth ivy,[4] is a low, spreading, viney plant with small purple flowers, native to southern Europe. It belongs to the plantain family (Plantaginaceae), and is introduced in North America, Australia, and elsewhere. The flower stalk is unusual for seeking light until it is fertilized, after which it grows away from the light. Other names include coliseum ivy,[4]Oxford ivy,[4]mother of thousands,[4]pennywort,[4] and wandering sailor.[4]
Species of flowering plant in the family Plantaginaceae
It spreads quickly, growing up to 5cm (2.0in) tall – it commonly grows in rock and wall crevices, and along footpaths. The leaves are evergreen, rounded to heart-shaped,2.5 to 5cm (1.0 to 2.0in) long and wide, 3–7-lobed, alternating on thin stems. The flowers are very small but distinctly spurred, similar in shape to snapdragon flowers.[5] Flowers from May to September.[6]
Plant habit
Leaf
Flower
Fruits
Distribution
Epiphytic upon the trunk of a palm tree, Auckland, NZ
Cymbalaria muralis is native to Mediterranean climates in south and southwest Europe, the Southern Alps, eastern Yugoslavia, southern Italy and Sicily.[7][8] It has spread throughout the world as an invasive plant, including the United States,[9] the British Isles,[10] Australia[11][12][13] and New Zealand.[13][14]
It is said to have been introduced into England by accident when a shipment of sculptures was brought to Oxford. It was first introduced early in the 17th century and was widely planted in the UK up to the 19th century.[15]
Reproduction
This plant has an unusual method of propagation. The flower stalk is initially positively phototropic and moves towards the light. After fertilisation, it becomes negatively phototropic ("scototropic") and moves away from the light. This results in seed being pushed into dark crevices of rock walls, where it is more likely to germinate.[16]
BSBI List 2007(xls). Botanical Society of Britain and Ireland. Archived from the original(xls) on 2015-06-26. Retrieved 2014-10-17.
"Cymbalaria muralis". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 9 February 2015.
David S. MacKenzie (2002). Perennial Ground Covers. Timber Press. p.121. ISBN978-0-88192-557-9.
Webb, D.A., Parnell, J. and Doogue, D. 1996. An Irish Flora. Dundalgan Press (W. Tempest) Ltd. Dundalk/. ISBN0-85221-131-7
Ewa Szczęśniak; Krzysztof Świerkosz (2003). "Cymbalaria muralis P.Gaertn., B.Mey. & Schreb. and Cymbalarietum muralis Görs 1966 in Lower Silesia – expansion or regression?". In A. Zając; M. Zając; B. Zemanek (eds.). Phytogeographical Problems of Synanthropic Plants. Jagiellonian University. pp.185–193. ISBN8391516148.
"Cymbalaria muralis". USDA Plants Profile. United States Department of Agriculture. Retrieved 30 June 2013.
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