Grindelia hirsutula
| Grindelia hirsutula | |
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Grindelia |
| Species: | G. hirsutula
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| Binomial name | |
| Grindelia hirsutula | |
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Synonymy | |
Grindelia hirsutula is a North American species of flowering plant in the daisy family known by the common names hairy gumplant and hairy gumweed.[2][3]
Distribution[]
Grindelia hirsutula is native to North America, widespread across Canada and in California and Oregon.[4][5] The species is highly variable, and many local populations have been named as varieties or as distinct species. All these taxa do, however, intergrade with one another.[6]
Description[]
Grindelia hirsutula is an erect perennial herb or subshrub sometimes as much as 250 cm (100 inches or 8 1/3 feet) tall but usually much shorter. The plant is usually green but the stems are often red or purplish-brown and the leaves can be somewhat yellowish to reddish.
The plant can produce numerous flower heads in branching arrays at the top of the plant. Each head is 2 or 3 centimeters (0.8-1.2 inches) wide with hemispheric cups of greenish phyllaries around the base, the bracts claw-like and bent away from the flowers. The center of the head is filled with many small yellow disc florets surround by numerous golden ray florets. The head produces a thick white exudate, especially in new flower heads.[6]
Varieties[]
- Grindelia hirsutula var. maritima — San Francisco Gum Plant, San Francisco gumplant, coastal gumweed; endemic to coastal California in the San Francisco Bay Area.[7][8]
References[]
- ^ The Plant List, Grindelia hirsutula Hook. & Arn.
- ^ Calflora taxon report, University of California, Grindelia hirsutula Hook. & Arn., Gumweed, hairy gumweed
- ^ Encyclopedia of Life: Grindelia hirsutula
- ^ "Grindelia hirsutula". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 4 January 2018.
- ^ USDA: Grindelia hirsutula distribution map
- ^ Jump up to: a b Flora of North America, Grindelia hirsutula Hooker & Arnott, Bot. 1833.
- ^ Calflora: Grindelia hirsutula var. maritima
- ^ USDA: Grindelia hirsutula var. maritima
External links[]
- Grindelia
- Flora of California
- Flora of Canada
- Flora of Oregon
- Flora of the Sierra Nevada (U.S.)
- Natural history of the California chaparral and woodlands
- Natural history of the California Coast Ranges
- Natural history of the Central Valley (California)
- Natural history of the San Francisco Bay Area
- Plants described in 1833