Trumpet Lichen – Cladonia fimbriata

Podetia 6-30mm tall, 2-6mm diameter cups. It’s like looking into an alien world, but it our world, and the world of lichen. This trumpet lichen grows on the bough of an old willow by my local river, and it is a bit like looking in on an alien landscape. This is a tiny grey-green cup-shaped lichen. Closer inspection reveals a rough, granulated appearance. This lichen is composed of a fungus and an algae which form a symbiotic relationship, where both life forms benefit each other. The trumpet-shaped podetia (cup-like structure) holds the apothecium (reproductive structure) and helps aid in spreading the lichen’s spores when raindrops splash down inside them.

Found on soil and rotting wood. Common and widespread.