Mixes of Algae and Fungi That Grow on Rocks
This page is the CodyCross answer for the clue below from Underground Worlds, Group 2171, Puzzle 1 (Chislehurst Caves).
Question is: Mixes of Algae and Fungi That Grow on Rocks
and the answer is: LICHENS
Word Meaning:
LICHENS — plural of lichen
Definitions from Wiktionary.