A close-up of the inflorescence of slender tarweed as seen at Kingston Prairie Nature Preserve........June 2006. This species can have 5-13 ray flowers although the typical number is 8.
A close-up of the involucre of slender tarweed as seen to the east of Salem, OR at Kingston Prairie Nature Preserve.......June 2006.
Two additional photos of the inflorescence of slender tarweed as seen at Kingston Prairie Nature Preserve to the east of Salem, OR.........June 2006. Note that the flower heads are clustered at or near the end of the stem. Similar
Madia gracilis has flower heads spaced out along the end of the stem.
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