[Tackweeds: The Genus Calycadenia West of the Cascade Mountains of Oregon and Washington]

Smooth Tackweed, Rosin Weed

Calycadenia truncata

Synonyms: Calycadenia truncata var. scabrella, Calycadenia truncata ssp. scabrella, Calycadenia truncata ssp. truncata

Flower head of Smooth Tackweed, Rosin Weed: Calycadenia truncata - Smooth Tackweed, Rosin Weed: Calycadenia truncata

Smooth Tackweed, Rosin Weed: Calycadenia truncata - Smooth Tackweed, Rosin Weed: Calycadenia truncata

Smooth tackweed as seen on the weedy grass slopes of Beatty Creek RNA, several miles southwest of Riddle, OR........June 10, 2017.
Paul Slichter