Ambrosia confertiflora

A fairly non-descript perennial Ambrosia.

Staminate pseudanthia, Achenbach Canyon on the southwest side of the Organ Mountains, 6 Oct 2007.

A pistillate pseudanthium in Achenbach Canyon, 6 Oct 2007.

Inflorescences in Achenbach Canyon, 6 Oct 2007.

Plant habit, Achenbach Canyon, 6 Oct 2007.

Cauline leaves, Achenbach Canyon, 6 Oct 2007.