Palmer Sagewort (Artemisia palmeri)
Parish's Goldenbush (Ericameria parishii)
Parish's Goldeneye (Bahiopsis parishii)
Pineapple Weed (Chamomilla suaveolens)
Pine Goldenbush (Ericameria pinifolia)
Pygmy Cedar (Peucephyllum schottii)
Rabbitbrush (Ericameria paniculata)
Ragweed (Ambrosia psilostachya)
Rock-daisy (Perityle emoryi)
Rush Sweetbush (Bebbia juncea)