1. Small clustering cactus of southwestern United States; a threatened species
   - Knowlton's cactus

Type of: cactus

Part of: genus Pediocactus, Pediocactus

• Virgil Garnett Thomson
• Virgil Thomson
• Virgilia
• Virgilia capensis
• Virgilia divaricata
• Virgilia oroboides
• virgin
• stigmata
• stigmatic
• stigmatisation
• stigmatise
• stigmatism
• stigmatist
• stigmatization
• stigmatize
• stilb
• stilbene
• stilbesterol
• stilbestrol
• stilbite
• stilboestrol
• stile
• stiletto
• stiletto heel
• still