Eriophyllum confertiflorum
| Eriophyllum confertiflorum | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Tribe: | Heliantheae |
| Genus: | Eriophyllum |
| Species: | E. confertiflorum |
| Binomial name | |
| Eriophyllum confertiflorum (DC.) Gray | |
| Synonyms[1] | |
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Synonymy
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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.[3] "Eriophyllum" means "wooly leaved.[3][4]
Eriophyllum confertiflorum gets its common name from the similar appearance of its inflorescence to the true yarrow, which has white flowers.[3][5][6]
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.[3]
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".[3] Leaves are alternate.[3] Leaves and stems are whitish when young, because of being covered in wooly white hairs, then become greenish to gray-green.[3] Leaves have 3-5 deep lobes.[3] 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.[3] "Confertiflorum" means densely flowered.[3] It blooms from January to July.[3] 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.[2]
- 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
- 1 2 The Plant List, Eriophyllum confertiflorum (DC.) A.Gray
- 1 2 3 Flora of North America, Eriophyllum confertiflorum (de Candolle) A. Gray, 1883. Golden or yellow yarrow
- 1 2 3 4 5 6 7 8 9 10 11 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
- 1 2 Calflora taxon report, University of California, Eriophyllum confertiflorum (DC.) A. Gray Yellow Yarrow, golden yarrow
- ↑ Rydberg, Per Axel 1915. North American Flora 34(2): 95 as Eriophyllum trifidum
External links
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Wikimedia Commons has media related to Eriophyllum confertiflorum. |
- Jepson Manual Treatment: Eriophyllum confertiflorum
- United States Department of Agriculture Plants Profile
- Eriophyllum confertiflorum - Calphotos Photo gallery, University of California