In the woods beside Oyster Bay, the forest floor is mostly made up of decayed wood, with old logs on top, gradually crumbling into the soil beneath. It's all covered with mosses and lichens. And after the fall rains, mushrooms.
|Lichenomphalia umbellifera: lichens, mosses, mushrooms, on old log.|
These mushrooms with the "navel" in the centre (whence they got the name "omphalia") and the pie-crust edge are scattered throughout the shady parts of the forest this week. They grow only in association with a lichen, Botrydina vulgaris; the dark green, crumbly-looking growth at their feet in this photo. The mushroom depends on the lichen for its nutrients, and both together grow on decaying wood.