Grindelia squarrosa

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Grindelia squarrosa
Curlycup Gumweed.jpg
Curlycup gumweed (Grindelia squarrosa)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Astereae
Genus: Grindelia
Species: G. squarrosa
Binomial name
Grindelia squarrosa
A form with rayless flowers is sometimes considered a separate species.

Grindelia squarrosa, also known as a curly-top gumweed or curlycup gumweed, is a small North American biennial or short-lived perennial plant which grows to a maximum height of 90 cm (appx. 3 ft) and bears flowers with yellow petals from July until late September.[1] It was used by Great Plains Tribes as a medicinal herb to treat illnesses such as asthma, bronchitis or skin rashes.[2]

The Lakota language name for the plant is pteíčhiyuȟa.

The Gosiute Shoshone name for the plant is mu’-ha-kûm.[3]


  1. ^ Kansas Wildflowers & Grasses
  2. ^ Northern Prairie Wildlife Research Center
  3. ^ Chamberlin, Ralph Vary (1911). "The Ethno-botany of the Gosiute Indians of Utah". Memoirs of the American Anthropological Association Vol II, part 5. Retrieved 2007-11-12.