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Butter and Eggs (Linaria vulgaris)

Butter and Eggs (Linaria vulgaris)

by | Aug 5, 2021

Butter and Eggs (Linaria vulgaris), Figwort Family (Scrophulariaceae), an introduced noxious weed on the Colorado Noxious Weed B-List. Common in meadows, open forests, along roadsides and streams, and in disturbed areas from plains to subalpine. Blooms from June...
Ownbey’s Thistle (Cirsium ownbeyi)

Ownbey’s Thistle (Cirsium ownbeyi)

by | Aug 4, 2021

Ownbey’s Thistle (Cirsium ownbeyi), Aster Family (Asteraceae), native, imperiled (S2S3) in Colorado and vulnerable (G3) globally, only found in Wyoming, Colorado and Utah. It grows in pinyon-juniper, sagebrush and riparian communities, including alcove seeps,...
Adobe Hills Thistle (Cirsium perplexans)

Adobe Hills Thistle (Cirsium perplexans)

by | Aug 4, 2021

Adobe Hills Thistle (Cirsium perplexans), Aster Family (Asteraceae), native and imperiled in Colorado (S2S3), and vulnerable globally (G3), found in the Gunnison and Colorado River Valleys. Grows in pinyon-juniper woodlands, sagebrush, saltbrush, and mixed shrublands,...