Morels Mushrooms (Morchella esculenta) a.k.a. Yellow Morel, Common Morel, Merkel, Sponge Mushroom and Land Fish growing in a White Pine Forest. This edible organism known as fungi range from microscopic forms to mammoth puffballs. Unlike plants, they do not carry out photosynthesis, and they must obtain food from organic matter, living or dead. Cap conical, honeycombed with deep irregular pits. Season: May-June. Spring. Ludlow, MA. USA. Wild.