Plectocephalus americanus

Formerly a Centaurea. An oddly-distributed plant, occurring from Arizona northeast to Wisconsin and in scattered states elsewhere. In New Mexico this is a plant of moist, flat sites at lower elevations.

Pseudanthia at Bar-B Draw north of Point of Rocks in Sierra County, 8 Aug 2007.

Phyllaries, Bar-B Draw, 8 Aug 2007.

Upper cauline leaves in Bar-B Draw, 8 Aug 2007.

A pseudanthium in Bar-B Draw, 8 Aug 2007.

Habitat in Bar-B Draw, 8 Aug 2007.