| Deinandra fasciculata | |
|---|---|
| |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Deinandra |
| Species: | D. fasciculata |
| Binomial name | |
| Deinandra fasciculata DC. | |
| Synonyms | |
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Deinandra fasciculata (syn: Hemizonia fasciculata), known by the common names clustered tarweed and fascicled spikeweed, is a species of flowering plant in the family Asteraceae native to western North America.
Range
Deinandra fasciculata is native to Baja California and California (primarily from San Diego County to Monterey County, including several of the Channel Islands; Calflora reports a few collections from the San Francisco Bay area, but these are from urban areas and probably represent cultivated specimens). It is a common member of coastal grassland habitats in the California chaparral and woodlands ecoregion and other habitats.
Description
Deinandra fasciculata is a thin-stemmed branched annual herb growing erect up to 100 cm (40 inches) in height. The upper leaves are narrow, about 1 centimeter long nested against the stem (more like short needles than leaves). The lower leaves are much bigger, up to 15 centimeters (6 inches) long.
Each flower head has a center of six yellowish disc florets with black stamens surrounded by five yellow ray florets. The ray florets generally have three teeth, the central tooth being the smallest. Plants flower in May through October.
In this genus the disk flowers are actually big enough to be seen as tiny flowers to the naked eye.
The plant has a tar-like smell.
Ecology
Deinandra fasciculata is pollinated by bees, and the seeds are primarily gravity-dispersed (they fall from the seed heads when mature). Seeds may also be dispersed by the many bird and small mammal species which eat them.
This species may hybridize with other members of its genus, as well as with Hemizonia and Centromadia species.
References
- NRCS. "Hemizonia fasciculata". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 20 January 2016.
- BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ^ Jepson eFlora: Hemizonia fasciculata . accessed 4.16.2015
- ^ Calflora taxon report, University of California, Deinandra fasciculata (DC.) Greene, Clustered tarweed
- Flora of California, Deinandra fasciculata (de Candolle) Greene, Fl. Francisc. 4: 424. 1897.
- ^ Montalvo, A. M.; L. H. Goode & J. L. Beyers (2010). "Plant Profile for Deinandra fasciculata" (PDF). Retrieved 16 June 2017.
- "Plants Profile for Hemizonia fasciculata (clustered tarweed)". plants.usda.gov. Retrieved 2017-06-16.
External links
Media related to Deinandra fasciculata at Wikimedia Commons
- Jepson eFlora (TJM2) Treatment of Deinandra fasciculata
- Archived: Jepson Manual (TJM93): Hemizonia fasciculata
- Hemizonia fasciculata — Calphotos Photos gallery, University of California
| Taxon identifiers | |
|---|---|
| Deinandra fasciculata | |
- Deinandra
- Flora of California
- Flora of Baja California
- Natural history of the California chaparral and woodlands
- Natural history of the California Coast Ranges
- Natural history of the Channel Islands of California
- Natural history of the Peninsular Ranges
- Natural history of the Santa Monica Mountains
- Natural history of the Transverse Ranges
- Plants described in 1836