Slow-Growing Fungus and Alga Plant
This page is the CodyCross answer for the clue below from Street Fair, Group 1305, Puzzle 3 (Flashing Lights).
Question is: Slow-Growing Fungus and Alga Plant
and the answer is: LICHEN
Word Meaning:
LICHEN — Any of many symbiotic organisms, being associations of algae and fungi, often found as white or yellow-to-blue–green patches on rocks, old walls, etc.
Definitions from Wiktionary.