1. Perennial of western North America having white flowers
   - white prairie aster

Type of: aster

• subject area
• subject case
• subject field
• subject matter
• subjection
• subjective
• subjectively
• subjectiveness
• subjectivism
• subjectivist
• subjectivity
• subjoin
• subjoining
• subjugable
• subjugate
• subjugated
• subjugation
• subjugator
• subjunction
• subjunctive
• subjunctive mood
• subkingdom
• subkingdom Metazoa
• triacetate
• triacid