An isidium is a vegetative reproductive structure present in some lichens. Isidia are outgrowths of the thallus surface, and are corticated (i.e., containing the outermost layer of the thallus), usually with a columnar structure, and consisting of both fungal hyphae (the mycobiont) and algal cells (the photobiont). They are fragile structures and ...
Found on
http://en.wikipedia.org/wiki/Isidium
(from the article `fungus`) ...or hyphae, may develop into a thallus under suitable conditions. Lichens without soredia may propagate by fragmentation of their thalli. Many ...
Found on
http://www.britannica.com/eb/a-z/i/42
a coralloid outgrowth from the thallus in certain lichens.
Found on
https://www.infoplease.com/dictionary/isidium
No exact match found.
