Related Clues:

• Purple perennial
• Spring bulb
• It's usually blue, green or brown
• Georgia O'Keeffe subject
• Pupil's milieu
• Where the pupil sits?
• Perennial flower
• Colorful iris ring
• Ring around a pupil, e.g.
• Nipple ring?
• Pupil setting
• It's surrounded by white
• Nipple ring
• Darkish circle
• The cornea covers it