Smooth Tackweed, Rosin Weed
Calycadenia truncata
Synonyms: Calycadenia truncata var. scabrella, Calycadenia truncata ssp. scabrella, Calycadenia truncata ssp. truncata
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Smooth tackweed as seen on the weedy grass slopes of Beatty Creek RNA, several miles southwest of Riddle, OR........June 10, 2017.
Paul Slichter