Verbesina encelioides
Verbesina encelioides | |
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A plant in flower near Valle, Arizona | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Verbesina |
Species: | V. encelioides
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Binomial name | |
Verbesina encelioides | |
Synonyms | |
Ximenesia encelioides Cav. |
Verbesina encelioides is a flowering plant in the family Asteraceae. Common names include golden crownbeard,[1] cowpen daisy, gold weed, wild sunflower,[2] butter daisy, crown-beard, American dogweed,[3] and the Spanish Añil del Muerto ("indigo of the dead").[4]
It is a summer annual with blooms resembling small sunflowers and distinctive flattened seeds. It is native to North America, growing in disturbed habitats.
Description
[edit]The plant grows up to 1.5 metres (5 ft) tall. The leaves are up to 10 centimetres (4 in) long, with toothed edges. Blooming from June to September, the yellow flower head is up to 5 cm (2 in) wide.[5]
Distribution and habitat
[edit]The species is native to the Southwest United States and Northern Mexico.[6] It is naturalized in parts of Eastern North America, the Middle East, Spain, Argentina, Australia and the Pacific islands.[7]
The species responds strongly to disturbances on suitable sites.[5] Like sunflowers, it produces allelopathic chemicals that slow the growth of other susceptible plant species. Research has identified an allelopathic effect on radishes[8] which may explain its ability to dominate other species in some locations.
Ecology
[edit]It is a larval host for the bordered patch.[9]
It has become invasive in some areas, particularly in the Northwestern Hawaiian Islands within Papahanaumokuakea Marine National Monument where it impacts seabird breeding habitat.
Uses
[edit]Native Americans and early settlers used the plants to treat skin disorders.[5]
References
[edit]- ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ^ "Crownbeard".
- ^ "Verbesina encelioides, Golden Crownbeard, Southwest Desert Flora". southwestdesertflora.com. Retrieved 2024-02-16.
- ^ Hawley, Rob (2018-09-10). "Herb of the month: Golden crownbeard, goldweed". The Taos News. Retrieved 2024-02-16.
- ^ a b c Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. pp. 405–406. ISBN 978-0-375-40233-3.
- ^ "Verbesina encelioides". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 2008-01-15.
- ^ "Crown Beard (Verbesina encelioides)". Victorian Resources Online. Department of Primary Industries. Retrieved 29 July 2011.
- ^ "Allelopathic potential of Verbesina encelioides root leachate in soil". Canadian Journal of Botany, 1999, Vol. 77, No. 10 pp. 1419-1424. Canadian Journal of Botany. Retrieved 17 May 2013.
- ^ The Xerces Society (2016), Gardening for Butterflies: How You Can Attract and Protect Beautiful, Beneficial Insects, Timber Press.