Yellow Thistle (Cirsium horridulum)

Yellow Thistle (Cirsium horridulum)

Yellow Thistle is common in the Coastal Plain and Piedmont of North Carolina.

Pender Co., NC 4/19/08.

Yellow Thistle (Cirsium horridulum)

This one is probably the common var. horridulum, which has densely tomentose stems and involucres. The less common var. vittatum, restricted to the Coastal Plain, has mostly glabrous stems and involucres.

Pender Co., NC 4/19/08.

All photographs and text ©2013 by Will Cook unless otherwise noted.