| 词条 | Eriophyllum confertiflorum |
| 释义 |
|image = Eriophyllum confertiflorum 2004-04-07.jpg |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Asterids |ordo = Asterales |familia = Asteraceae |tribus = Heliantheae |genus = Eriophyllum |species = E. confertiflorum |binomial = Eriophyllum confertiflorum |binomial_authority = (DC.) Gray |synonyms_ref=[1] |synonyms={{collapsible list|bullets = true |title=Synonymy |Bahia confertiflora DC. 1836 |Bahia tenuifolia DC. |Eriophyllum cheiranthoides Rydb. |Eriophyllum crucigerum Rydb. |Eriophyllum tenuifolium (DC.) Rydb. |Eriophyllum tanacetiflorum Greene, syn of var. tanacetiflorum |Bahia trifida Nutt., syn of var. trifidum |Eriophyllum trifidum (Nutt.) Rydb., syn of var. trifidum |}}}}Eriophyllum confertiflorum, commonly called golden yarrow or yellow yarrow,[2] is a North American species of plants in the sunflower family, native to California and Baja California. It has wooly leaves when young, and yellow flower heads.[2] "Eriophyllum" means "wooly leaved."[2][3]Eriophyllum confertiflorum gets its common name from the similar appearance of its inflorescence to the true yarrow, which has white flowers.[2][4][5] Habitat and distributionEriophyllum confertiflorum is a highly variable plant which is generally a small shrub. It grows primarily in the Sierra Nevada and Coastal Ranges in California and Baja California. It can be found in a number of plant communities and habitats. In the Santa Monica Mountains of California, it is common in open places that are away from the coast.[2]Eriophyllum confertiflorum grows in large clumps or stands of many erect stems often exceeding 50 cm (20 inches) in height. Botanist Nancy Dale describes the growth pattern as "tidy".[2] Leaves are alternate.[2] Leaves and stems are whitish when young, because of being covered in wooly white hairs, then become greenish to gray-green.[2] Leaves have 3-5 deep lobes.[2] Yellow flowers are crowded in the head, which is up to 3/8 inch (0.94 cm) across, flat-topped, with both disc flowers and ray flowers.[2] "Confertiflorum" means densely flowered.[2] It blooms from January to July.[2] The fruit is an achene with a very short pappus. The top of each stem forms an inflorescence of up to 30} flower heads, each bright golden yellow head with a large center of disc florets and usually a fringe of rounded to oval ray florets.[6]
References1. ^1 The Plant List, Eriophyllum confertiflorum (DC.) A.Gray 2. ^1 2 3 4 5 6 7 8 9 10 Flowering plants: The Santa Monica Mountains, coastal & chaparral regions of Southern California, Nancy Dale, 2nd Ed., 2000, p. 63 3. ^Mooring, J. S. 1994. A cytogenetic study of Eriophyllum confertiflorum (Compositae, Helenieae). American Journal of Botany 81: 919–926. 4. ^Biota of North America Program 2014 county distribution map 5. ^1 Calflora taxon report, University of California, Eriophyllum confertiflorum (DC.) A. Gray Yellow Yarrow, golden yarrow 6. ^1 2 Flora of North America, Eriophyllum confertiflorum (de Candolle) A. Gray, 1883. Golden or yellow yarrow 7. ^[https://www.biodiversitylibrary.org/page/28762178#page/23/mode/1up Rydberg, Per Axel 1915. North American Flora 34(2): 95] as Eriophyllum trifidum External links{{commons category|Eriophyllum confertiflorum}}
12 : Eriophyllum|Flora of California|Flora of Baja California|Flora of the Sierra Nevada (U.S.)|Natural history of the California chaparral and woodlands|Natural history of the Channel Islands of California|Natural history of the California Coast Ranges|Natural history of the Peninsular Ranges|Natural history of the Santa Monica Mountains|Natural history of the Transverse Ranges|Plants described in 1836|Taxa named by Asa Gray |
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