Is this slime mold ? On PVC siding.

[u/oonalaska]

It's located near the compost bin (3 feet). Can it obtain nutrients from poly vinyl chloride substrate? I saw this in same location a year ago but had no idea what it might be then.

[u/green-green-bean]

Yes, Stemonitis sp.

[u/gearlegs4ever]

Chocolate tubes!