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Deinandra fasciculata

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Deinandra fasciculata
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Subfamily:
Asteroideae
Tribe:
Heliantheae
Genus:
Deinandra
Species:
D. fasciculata
Binomial name
Deinandra fasciculata
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[1] and fascicled spikeweed,[2] is a species of flowering plant in the daisy family native to western North America. [3]

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).[4] It is a common member of coastal grassland habitats in the California chaparral and woodlands ecoregion and other habitats.[3]

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.[5]

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.[3]

In this genus the disk flowers are actually big enough to be seen as tiny flowers to the naked eye.

See also

References

  1. ^ USDA, NRCS (n.d.). "Hemizonia fasciculata". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 20 January 2016.
  2. ^ "BSBI List 2007". Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-02-25. Retrieved 2014-10-17.
  3. ^ a b c Jepson eFlora: Hemizonia fasciculata . accessed 4.16.2015
  4. ^ Calflora taxon report, University of California, Deinandra fasciculata (DC.) Greene, Clustered tarweed
  5. ^ Flora of California, Deinandra fasciculata (de Candolle) Greene, Fl. Francisc. 4: 424. 1897.
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