Related Clues:

• See 9-Across
• Type of surgeon
• State tree of Massachusetts
• Arborist's concern
• It may be slippery
• One may be blighted
• Peach or plum
• With 7-Down, it's seen on some trunks
• Ancestry record
• Apple or maple
• See 40-Down
• Type of tree
• Oriole's home
• Stately tree
• It might have blight