“Chocolate Tube Slime” (Stemonitis fusca)

…although it may look like a fungus S.fusca is actually a amoebozoan protist that is found worldwide. Like some other slime molds they typically grow in clusters on rotting wood and are characterized by their tall brown sporangia (spores) which are supported by slender stalks.


Ameobozoa-Mycetozoa-Myxogastria-Stemonitida-Stemonitidae-Stemonitis-S. fusca

Images: bdunc photos and 6el

Stemonitis sp. “Brown Plasmodial Slime Mold” Myxogastria

Point Defiance Park, Tacoma, WA
July 8, 2013
Robert Niese

Slime molds are colonial unicellular organisms that are distantly related to animals and fungi. They are active predators of bacteria, protists, and fungi, and are most often observed in their fruiting phase (as seen above). These beautiful fruiting structures (check out these crazy colors!) then release spores which get distributed by the wind or small animals.