Deinandra increscens

Deinandra increscens is a species of flowering plant in the aster family known by the common name grassland tarweed. It is endemic to California, where it has been found primarily in Monterey, San Luis Obispo and Santa Barbara Counties (including Santa Cruz and Santa Rosa Islands). A few isolated populations have been reported from Kern and Merced Counties, but these are from urban areas (Cities of Merced and Bakersfield) and probably represent cultivated specimens.[2]

Deinandra increscens
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Subfamily:
Asteroideae
Tribe:
Heliantheae
Genus:
Deinandra
Species:
D. increscens
Binomial name
Deinandra increscens
(H.M.Hall ex D.D.Keck) B.G.Baldwin
Synonyms[1]
  • Hemizonia increscens (H.M.Hall ex D.D.Keck) Tanowitz
  • Hemizonia paniculata subsp. increscens H.M.Hall ex D.D.Keck
  • Hemizonia increscens subsp. villosa Tanowitz, syn of subsp. villosa

Deinandra increscens is an annual up to 100 cm (40 inches) tall. It has numerous flower heads, often tightly clumped together, each with yellow ray florets and disc florets with yellow corollas but red or purple anthers.[3]

Subspecies[1]

References
  1. The Plant List, Deinandra increscens (H.M.Hall ex D.D.Keck) B.G.Baldwin
  2. Calflora taxon report, University of California, Deinandra increscens (H.M. Hall ex D.D. Keck) B.G. Baldw., grassland tarweed
  3. Flora of North America, Deinandra increscens (H. M. Hall ex D. D. Keck) B. G. Baldwin, Novon. 9: 468. 1999.
  4. USFWS. Final rule for endangered status for four plants from south central coastal California. Federal Register March 20, 2000.
  5. ssp. villosa. Flora of North America
  6. ssp. villosa. Jepson Manual


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