[Tarweeds: The General Hemizonella and Madia East of the Cascade Mts. of Oregon and Washington]

Least Tarweed, Smallhead Tarweed, Small-head Tarweed

Hemizonella minima

Synonyms: Hemizonia minima, Madia minima

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.

Least Tarweed, Smallhead Tarweed, Small-head Tarweed: Hemizonella minima (Synonyms: Hemizonia minima, Madia minima)

Small-head tarweed as seen in a vernally moist swale to the west of the North Fork Crooked River and about one and one-quarter mile south of the junction of FS Roads #42 and #4215, Ochoco National Forest..........June 12, 2015.

Least Tarweed, Smallhead Tarweed, Small-head Tarweed: Hemizonella minima (Synonyms: Hemizonia minima, Madia minima)

Small-head tarweed as seen on balds in the Bickleton Ridge Unit of the Klickitat Wildlife Area......May 28, 2017.


Least Tarweed, Smallhead Tarweed, Small-head Tarweed: Hemizonella minima (Synonyms: Hemizonia minima, Madia minima) - Least Tarweed, Smallhead Tarweed, Small-head Tarweed: Hemizonella minima (Synonyms: Hemizonia minima, Madia minima)

Small-head tarweed as seen between Pendleton,OR and Meacham, OR along the old highway........June 25, 2008. Note the opposite leaves.

Least Tarweed, Smallhead Tarweed, Small-head Tarweed: Hemizonella minima (Synonyms: Hemizonia minima, Madia minima) - Least Tarweed, Smallhead Tarweed, Small-head Tarweed: Hemizonella minima (Synonyms: Hemizonia minima, Madia minima)

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.

Least Tarweed, Smallhead Tarweed, Small-head Tarweed: Hemizonella minima (Synonyms: Hemizonia minima, Madia minima) - Least Tarweed, Smallhead Tarweed, Small-head Tarweed: Hemizonella minima (Synonyms: Hemizonia minima, Madia minima)

Smallhead tarweed as seen left along Old Headquarters Road in the Klickitat State Wildlife Area of south-central Washington.........May 31, 2009. The photo at right shows small tarweed as seen on rocky balds along the Steins Pillar Trail #387, Ochoco National Forest.........May 21, 2017.

Paul Slichter