1. North American annual with red or rose-coloured flowers
   - prairie bird's-foot trefoil, compass plant, prairie lotus, prairie trefoil

Type of: subshrub, suffrutex

• sympodial
• symposiarch
• symposiast
• symposium
• symptom
• symptomatic
• symptomatically
• symptomatology
• symptomless
• synaeresis
• synaesthesia
• synaesthetic
• synagogue
• Synagrops
• Synagrops bellus
• Synanceja
• Synanceja verrucosa
• synapse
• synapsid
• synapsid reptile
• Synapsida
• synapsis
• synaptic
• Synaptomys
• Synaptomys borealis