| 词条 | Grindelia hirsutula |
| 释义 |
|image = Gum Plant (Grindelia hirsutula) (4324634490).jpg |image2=Grindeliahirsutula.jpg |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Astereae |genus = Grindelia |species = G. hirsutula |binomial = Grindelia hirsutula |binomial_authority = Hook. & Arn. 1833 |synonyms_ref=[1] |synonyms ={{collapsible list|bullets = true |title=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]DistributionGrindelia 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]DescriptionGrindelia 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
References1. ^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. ^{{GRIN | accessdate = 4 January 2018}} 5. ^USDA: Grindelia hirsutula distribution map 6. ^1 Flora of North America, Grindelia hirsutula Hooker & Arnott, Bot. 1833. 7. ^Calflora: Grindelia hirsutula var. maritima 8. ^USDA: Grindelia hirsutula var. maritima External links
10 : 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 |
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