The open plant encyclopedia
Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.
The plants people record most in your country, and ones that grow there wild.
Filter by what you want to do, shape, origin, country, care and safety.
Packera hesperia
Also called Siskiyou Butterweed, Serpentine Groundsel
Packera hesperia is a flowering plant in the aster family, Asteraceae. Commonly known as western ragwort and as serpentine groundsel, it is endemic to the Siskiyou Mountains, where it grows on serpentine soils. Conservation groups have identified this species as vulnerable, in part due to its limited geographic distribution.
Packera hesperia is endemic to the Siskiyou Mountains, where it grows at elevations of 500–2500 m. There are at least 5,000 individuals in Josephine and Curry Counties in southwestern Oregon, spread across at least 45 populations. In California, there are 4 known populations, all in Del Norte County. It grows in open woodlands on serpentine soils. Associated species commonly found growing with P. hesperia include the serpentine endemics Pinus jeffreyi and Arctostaphylos viscida.
Packera actinella · Small's ragwort · Shale barren ragwort · Golden ragwort · San Bernardino ragwort · Bolander's ragwort · Brewer's ragwort · Woolly groundsel · Bittercress ragwort · Beaver Mountain ragwort · Cleveland's ragwort · Widehead groundsel
Text excerpted from the Wikipedia article Packera hesperia by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
