Thymophylla pentachaeta
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Thymophylla pentachaeta, also known as fiveneedle pricklyleaf,[1] golden dyssodia or dogweed, is a perennial or subshrub in the family Asteraceae.
The plant grows up to Script error: No such module "convert". tall. The leaves are about Script error: No such module "convert". long and pinnately divided. From April to October, atop leafless stalks are solitary yellow flower heads, Script error: No such module "convert". wide, with 8–13 rays surrounding disk flowers.[2] T. acerosa is woodier, with leaves closer to the flowers.[2]
Four varieties are recognised:[3]
- Thymophylla pentachaeta var. belenidium (DC.) StrotherScript error: No such module "Check for unknown parameters".
- Thymophylla pentachaeta var. hartwegii (A.Gray) StrotherScript error: No such module "Check for unknown parameters".
- Thymophylla pentachaeta var. pentachaeta
- Thymophylla pentachaeta var. puberula (Rydb.) StrotherScript error: No such module "Check for unknown parameters".
The species is native to the southwestern and south-central United States, Mexico, and Argentina,[3] being found in arid climates.[2]
References
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External links
- Thymophylla pentachaeta Flora of North America
- Dyssodia pentachaeta University of Arizona Pima County Cooperative Extension
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