Crottle is a symbiotic jynin o a fungus (the mycobiont) thegither wi a photaesynthetic pairtner (the photaebiont), thit is aither an algae or cyanobacteria that maks fuid fer the mycobiont frae sunlicht whiles the photaebiont is protectit bi the filaments o the crottle.

Crottles kivers aroond 7% o the warld's surface, bidin in a range o pairts, incluidin the maist extreme places on the yird^[1]. Crottles is fand maist tae growe on stanes, stane-dykes an trees.

In the bygane mony ferm an cot-hooses haed their ain baurel o graith, or maister (ammoniac), in a lit pig, for tae mak reid or purpie lit fer tae dye thir claes.

Wikimedia Commons haes media relatit tae Lecanorales.

Taxonomie

Crottles is a kynd o organism thit is kent as polyphyletic, meanin that it is fand in mony sindry phyla o the fungus kinrick, wi ilka faimly descendit o a sindry ancestor^[2].

References