Eriophyllum confertiflorum
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Eriophyllum confertiflorum, commonly called golden yarrow or yellow yarrow,[1] is a North American species of plant in the family Asteraceae, 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 distribution
Eriophyllum 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 Script error: No such module "convert". 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 Script error: No such module "convert". 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.[1]
- Eriophyllum confertiflorum var. confertiflorum - most of species range
- Eriophyllum confertiflorum var. tanacetiflorum (Greene) Jeps. - Sierra Nevada foothills + San Gabriel Mountains
- Eriophyllum confertiflorum var. trifidum (Nutt.) A.Gray - California coast between Santa Barbara + Monterey[7]
References
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- ↑ a b c Flora of North America, Eriophyllum confertiflorum (de Candolle) A. Gray, 1883. Golden or yellow yarrow
- ↑ a b c d e f g h i j k Flowering plants: The Santa Monica Mountains, coastal & chaparral regions of Southern California, Nancy Dale, 2nd Ed., 2000, p. 63
- ↑ Mooring, J. S. 1994. A cytogenetic study of Eriophyllum confertiflorum (Compositae, Helenieae). American Journal of Botany 81: 919–926.
- ↑ Biota of North America Program 2014 county distribution map
- ↑ a b Calflora taxon report, University of California, Eriophyllum confertiflorum (DC.) A. Gray Yellow Yarrow, golden yarrow
- ↑ Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
- ↑ Rydberg, Per Axel 1915. North American Flora 34(2): 95 as Eriophyllum trifidum
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External links
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- Eriophyllum
- Flora of California
- Flora of Baja California
- Flora of the Sierra Nevada (United States)
- 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
- Flora without expected TNC conservation status