Least Tarweed, Smallhead Tarweed, Small-head Tarweed
Hemizonella minima
Synonyms: Hemizonia minima, Madia minima
The photo above shows small-head tarweed as seen between Pendleton,OR and Meacham, OR along the old highway....................June 25, 2008. This plant seems to be taller and exists as a single stem which might indicate it is really small tarweed (Madia exigua). Note in the photos that the lower leaves are opposite while some of the upper ones may be alternate.
The photo above shows small-head tarweed as seen between Pendleton,OR and Meacham, OR along the old highway....................June 25, 2008. Note the opposite leaves.
The photo above shows small-head tarweed as seen between Pendleton,OR and Meacham, OR along the old highway....................June 25, 2008.
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Close-up views of smallhead tarweed as seen along Old Headquarters Road in the Klickitat State Wildlife Area of south-central Washington......................May 31, 2009.
Smallhead tarweed as seen along Old Headquarters Road in the Klickitat State Wildlife Area of south-central Washington......................May 31, 2009.
Paul Slichter