#saprobes

I presume this is some sort of staining fungus (species unknown) degrading driftwood on the beach. These pioneer saprobes (saprotrophic=feed on dead material) are an early part of the wood decay process. The green colored stain comes from the fungus’ melanin deposition. While these fungi are not capable of degrading complex polymers like lignin and cellulose, they can consume easily accessible sugars in the dead plant cells. These organisms grow and reproduce quickly, however pioneer saprobes are eventually wiped out by fungal species that secrete antibiotics later in the decomposition process. Let me know if you recognize this beautiful pattern of decay.

Phallus rubicundus,

Saprobic mushrooms

Decomposers are essential for the survival of ecosystems. Saprobic mushrooms are fungi that act as decomposers, feeding on dead and decaying wood, leaves, litter, and other organic matter. To digest this they secrete enzymes that break it down. This releases and recycles vital nutrients for other organisms, and helps dispose of organic waste.

In the photo: Mycena subcana (left) and Xeromphalina campanella (right) decomposing a conifer stump in Ordeson-Todd Woods, in Ashland, Oregon, US.