Deinandra fasciculata
{{Short description|Species of flowering plant}}
{{Speciesbox
|image = Deinandra-fasciculata-flower.jpeg
|genus = Deinandra
|species = fasciculata
|authority = DC.
|synonyms_ref =
|synonyms =
- Hemizonia fasciculata DC.
- Deinandra fasciculata var. ramosissima (Benth.) Davidson & Moxley
- Deinandra simplex Elmer
- Hartmannia fasciculata DC.
- Hemizonia ramosissima Benth.
}}
Deinandra fasciculata (syn: Hemizonia fasciculata), known by the common names clustered tarweed{{PLANTS|id=HEFA|taxon=Hemizonia fasciculata|accessdate=20 January 2016}} and fascicled spikeweed,{{BSBI 2007 |accessdate=2014-10-17 }} is a species of flowering plant in the family Asteraceae native to western North America.[http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=77592 Jepson eFlora: Hemizonia fasciculata] . accessed 4.16.2015
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).[http://www.calflora.org/cgi-bin/species_query.cgi?where-calrecnum=10828 Calflora taxon report, University of California, Deinandra fasciculata (DC.) Greene, Clustered tarweed] 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.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066466 Flora of California, Deinandra fasciculata (de Candolle) Greene, Fl. Francisc. 4: 424. 1897. ]
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.
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.{{Cite web|url=https://plants.usda.gov/core/profile?symbol=HEFA|title=Plants Profile for Hemizonia fasciculata (clustered tarweed)|website=plants.usda.gov|access-date=2017-06-16}}
This species may hybridize with other members of its genus, as well as with Hemizonia and Centromadia species.
References
{{Reflist}}
External links
{{Commons category-inline|Deinandra fasciculata}}
- [http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=77592 Jepson eFlora (TJM2) Treatment of Deinandra fasciculata]
- Archived: [http://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment.pl?609,1326,1340 Jepson Manual (TJM93): Hemizonia fasciculata]
- [http://calphotos.berkeley.edu/cgi/img_query?query_src=photos_index&where-taxon=Hemizonia+fasciculata Hemizonia fasciculata — Calphotos Photos gallery, University of California]
{{Taxonbar|from=Q5252462}}
Category:Flora of Baja California
Category:Natural history of the California chaparral and woodlands
Category:Natural history of the California Coast Ranges
Category:Natural history of the Channel Islands of California
Category:Natural history of the Peninsular Ranges
Category:Natural history of the Santa Monica Mountains
Category:Natural history of the Transverse Ranges