Grindelia hirsutula

Grindelia hirsutula
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Asterales
Family:	Asteraceae
Tribe:	Astereae
Genus:	Grindelia
Species:	G. hirsutula
Binomial name
	Grindelia hirsutula; Hook. & Arn. 1833
Synonyms[1]
	Synonymy Donia glutinosa Hook. ; Grindelia acutifolia Steyerm. ; Grindelia arenicola Steyerm. ; Grindelia blakei Steyerm. ; Grindelia bracteosa J.T.Howell ; Grindelia brownii A.Heller ; Grindelia camporum Greene ; Grindelia collina J.K.Henry ; Grindelia columbiana (Piper) Rydb. ; Grindelia discoidea Nutt. 1840 not Hook. & Arn. 1836 ; Grindelia fastigiata Greene ; Grindelia hallii Steyerm. ; Grindelia hendersonii Greene ; Grindelia humilis Hook. & Arn. ; Grindelia inornata Greene ; Grindelia integerrima Rydb. ; Grindelia lanata Greene ; Grindelia latifolia Kellogg ; Grindelia macrophylla Greene ; Grindelia maritima (Greene) Steyerm. ; Grindelia nana Nutt. ; Grindelia oregana A.Gray ; Grindelia pacifica M.E.Jones ; Grindelia paludosa Greene ; Grindelia patens Greene ; Grindelia paysonorum H.St.John ; Grindelia perennis A.Nelson ; Grindelia procera Greene ; Grindelia revoluta Steyerm. ; Grindelia rubricaulis DC. ; Grindelia stricta DC. ; Grindelia venulosa Jeps. ; plus many more names at level of variety or form ;

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

External links

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.

[1] The Plant List, Grindelia hirsutula Hook. & Arn.

[2] Calflora taxon report, University of California, Grindelia hirsutula Hook. & Arn., Gumweed, hairy gumweed

[3] Encyclopedia of Life: Grindelia hirsutula

[4] "Grindelia hirsutula". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 4 January 2018.

[5] USDA: Grindelia hirsutula distribution map

[brandi-6] Flora of North America, Grindelia hirsutula Hooker & Arnott, Bot. 1833.

[7] Calflora: Grindelia hirsutula var. maritima

[8] USDA: Grindelia hirsutula var. maritima