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Heterotheca villosa, called the hairy goldenaster, is a species of flowering plant in the family Asteraceae found in central and western North America.

Heterotheca villosa
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Heterotheca
Species:	H. villosa
Binomial name
Heterotheca villosa (Pursh) Shinners 1951
Synonyms[1]
Synonymy Amellus villosus Pursh Aster gracilentus Banks ex DC. Chrysopsis mollis Nutt. Chrysopsis villosa (Pursh) Nutt. ex DC. Diplogon falcatum (Pursh) Kuntze Diplogon villosum (Pursh) Kuntze Diplostephium hispidum Nees ex DC. Inula villosa (Pursh) Nutt. Sideranthus integrifolius Nutt. Chrysopsis ballardii Rydb. Chrysopsis depressa Rydb. Heterotheca depressa (Rydb. ex Rydb.) Dorn Chrysopsis butleri Rydb. Chrysopsis foliosa Nutt. Chrysopsis imbricata A.Nelson Heterotheca foliosa (Nutt.) Shinners Chrysopsis arida A.Nelson Chrysopsis asprella Greene Chrysopsis bakeri Greene Chrysopsis columbiana Greene Chrysopsis compacta Greene Chrysopsis floribunda Greene Chrysopsis grandis Rydb. Chrysopsis hirsuta Greene Chrysopsis hirsutissima Greene Chrysopsis hispida (Hook.) DC. Chrysopsis wisconsinensis (A.Gray) Heterotheca wisconsinensis (Shinners) Shinners Chrysopsis horrida Rydb. Heterotheca horrida (Rydb.) V.L.Harms Chrysopsis pedunculata Greene

Description

The plant grows to 50 centimetres (20 inches) in height and the leaves are 1.5–3 cm (5⁄8–1+1⁄8 in) in average length. Blooming from May to October, the flower head is about 2.5 cm (1 in) wide, with yellow ray and disk florets. The seeds have white bristles at the tip.[2] The species is somewhat difficult to identify, with a number of close relatives and many varieties.[2]

Varieties[1][3][4]

• Heterotheca villosa var. ballardii (Rydb.) Semple - northern Great Plains in US and Canada
• Heterotheca villosa var. depressa (Rydb.) Semple - Wyoming
• Heterotheca villosa var. foliosa (Nutt.) V.L.Harms - Rockies, Black Hills, northern Cascades, etc.
• Heterotheca villosa var. minor (Hook.) Semple - Rockies, Cascades, Sierra Nevada, etc.
• Heterotheca villosa var. nana (A.Gray) Semple - Rockies + other mountains from South Dakota to Arizona
• Heterotheca villosa var. pedunculata (Greene) V.L.Harms ex Semple - Arizona, New Mexico, Colorado, Utah
• Heterotheca villosa var. scabra (Eastw.) Semple - Mexico, southwestern USA
• Heterotheca villosa var. sierrablancensis Semple - New Mexico
• Heterotheca villosa var. villosa - northern Great Plains, Columbia Plateau, etc.

Distribution and habitat

The species is widespread across central and western North America, from Ontario west to British Columbia and south as far as Illinois, Kansas, Nuevo León, Guanajuato, and northern Baja California.[5][3][4][6][7] It grows on plains, rocky slopes and cliffs, at low elevations and in coniferous forests.[2]

References

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