Short-fringed Knapweed, Tyrol Knapweed
Centaurea nigrescens
Synonyms: Centaurea dubia, Centaurea dubia ssp. nigrescens, Centaurea dubia ssp. vochinensis, Centaurea jacea ssp. nigrescens, Centaurea transalpina, Centaurea vochinensis
![Short-fringed Knapweed, Tyrol Knapweed: Centaurea nigrescens (Synonyms: Centaurea dubia, Centaurea dubia ssp. nigrescens, Centaurea dubia ssp. vochinensis, Centaurea jacea ssp. nigrescens, Centaurea transalpina, Centaurea vochinensis)](nigrescens/nigrescens1e.jpg)
Short-fringed knapweed as seen along the Springwater Trail about two miles east of Gresham, OR........October 11, 2010.
- ![Flower head of Short-fringed Knapweed, Tyrol Knapweed: Centaurea nigrescens (Synonyms: Centaurea dubia, Centaurea dubia ssp. nigrescens, Centaurea dubia ssp. vochinensis, Centaurea jacea ssp. nigrescens, Centaurea transalpina, Centaurea vochinensis)](nigrescens/nigrescens1d.jpg)
- ![Involucral bracts of Short-fringed Knapweed, Tyrol Knapweed: Centaurea nigrescens (Synonyms: Centaurea dubia, Centaurea dubia ssp. nigrescens, Centaurea dubia ssp. vochinensis, Centaurea jacea ssp. nigrescens, Centaurea transalpina, Centaurea vochinensis)](nigrescens/nigrescens1c.jpg)
Close-ups of the flower heads and involucral bracts of short-fringed knapweed as seen along the Springwater Trail about two miles east of Gresham, OR......October 11, 2010.
Paul Slichter