Verbesina encelioides
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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
The plant grows up to Script error: No such module "convert". tall. The leaves are up to Script error: No such module "convert". long, with toothed edges. Blooming from June to September, the yellow flower head is up to Script error: No such module "convert". wide.[5]
Distribution and habitat
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
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
Native Americans and early settlers used the plants to treat skin disorders.[5]
References
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- ↑ Template:BSBI 2007
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- ↑ Template:GRIN
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- ↑ The Xerces Society (2016), Gardening for Butterflies: How You Can Attract and Protect Beautiful, Beneficial Insects, Timber Press.
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