Dieteria canescens
species of plant
Dieteria canescens (formerly Machaeranthera canescens) is an annual plant or short lived perennial plant in the family Asteraceae, known by the common names hoary tansyaster and hoary-aster.
"Canescens" means "gray-hairy".
Range and habitat
Dieteria canescens is native to western and central North America, from the Pacific Coast to the Western part of the Great Plains, from British Columbia south to California, Sonora, and Chihuahua, east to Saskatchewan, the Dakotas, and Oklahoma, with a few isolated populations in Iowa and Minnesota.
Growth pattern
Dieteria canescens is a woolly-haired, glandular annual or perennial herb with one or more branching stems sometimes exceeding 100 cm (39 in) in height.
Leaves and stems
The linear to oblong leaves may reach 10 centimetres (3.9 inches) long near the base of the stems, their edges usually serrated or toothed.
The stems are glandular with short hairs.
Flowers and fruits
The inflorescence bears one or more flower heads lined with several layers of pointed, curling or curving phyllaries. The head has a center of many yellow disc florets and a fringe of blue or purple ray florets each 1 to 2 centimeters long. The fruit is an achene around 3 millimeters in length tipped with a pappus of long hairs.
A number of insects can often be found in the flowers.
The public source identifies “Dieteria canescens” as species of plant. This brief keeps that definition visible, then builds a research path around Dieteria, canescens and species.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Jun 28, 2025. The linked authority identifier is Q19848796. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Dieteria canescens” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.