1. Bog plant of pine barrens of southeastern United States having spikes of irregular yellow-orange flowers
   - yellow milkwort, candyweed, yellow bachelor's button, Polygala lutea

Type of: milkwort

• xxvi
• xxvii
• xxviii
• xxx
• xxxi
• xxxii
• xxxiii
• xxxiv
• xxxv
• xxxvi
• xxxvii
• xxxviii
• XXY
• XXY-syndrome
• XY
• xylan
• Xylaria
• Xylaria mali
• Xylaria polymorpha
• Xylariaceae
• xylem
• rydberg
• rydberg constant
• rydberg unit
• Rydberg's penstemon