yellow scales

yellow scalesYellow scales (Xanthoria parietina) on the common lilac (Syringa vulgaris).

yellow scales, (Xanthoria parietina), lichen species characterized by lobed margins and a wrinkled centre. It is usually found where the air is filled with mineral salts, especially near the sea and on rocks and walls. It was once considered a valuable medication for jaundice because of its yellow or orange colour.

This article was most recently revised and updated by Amy Tikkanen.
Citation Information
Article Title: yellow scales
Website Name: Encyclopaedia Britannica
Publisher: Encyclopaedia Britannica, Inc.
Date Published: 15 October 2012
Access Date: April 21, 2025