''Centromadia fitchii'', common name Fitch's spikeweed
or Fitch's tarweed, is a
species of
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...
n plants in the tribe
Madieae within the family
Asteraceae. It is native to
California and southwestern
Oregon.
''Centromadia fitchii'' is an herb up to 50 cm (20 inches) tall. It produces arrays of numerous yellow
flower heads
A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...
with both
ray florets and
disc florets.
Gray, Asa 1857. Reports of explorations and surveys: to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean, made under the direction of the Secretary of War 4: 109
as Hemizonia fitchii
References
External links
Calflora Database: ''Centromadia fitchii'' (Spikeweed)U.C. Photos gallery ''Centromadia fitchii''
— ''formerly ''Hemezonia fitchii''.
*
Madieae
Flora of California
Flora of the Sierra Nevada (United States)
Flora of Oregon
Natural history of the California chaparral and woodlands
Natural history of the California Coast Ranges
Natural history of the Central Valley (California)
Plants described in 1857
Taxa named by Edward Lee Greene
Flora without expected TNC conservation status
{{Asteroideae-stub