Related Clues:

• Mainlander's memento
• It gets under your collar
• Floral wear
• Big snake
• Souvenir from the islands
• Flowery accessory
• Allegiance
• Gift that's hung around the neck
• Wrap of a sort
• Neck wrap
• Flower wreath
• Big serpent
• Floral garland
• Linkage
• Neckwear for 15-Across, perhaps