1. Spiny shrub with silvery-scurfy foliage of alkaline plains of southwestern United States and Mexico
   - quail bush, quail brush, white thistle

Type of: saltbush

• Psidium
• Psidium cattleianum
• Psidium guajava
• Psidium guineense
• Psidium littorale
• Psidium littorale longipes
• psilocin
• psilocybin
• psilomelane
• Psilophytaceae
• Psilophytales
• psilophyte
• psilophyton
• Psilopsida
• psilosis
• Psilotaceae
• Psilotales
• Psilotatae
• Psilotum
• Psilotum nudum
• Psithyrus
• Psittacidae
• Psittaciformes
• psittacosaur
• psittacosaurus