Boletinus porosu, Gyrodon merulioides, Helvella acetabulum

"Boletinus porosu, Gyrodon merulioides, Helvella acetabulum, The Elfin Cup

This Bolete insists on the Ash Tree as its exclusive symbiotic tree partner. Also intermediate in form, its gill-like shallow tubes, yellow when young, darkening to greenish black, form an elaborate tracery. The only Bolete with a literal stalk. With it, Elfin Cups."

In publication, Page 79: "Reflections on the Fungaloids" by B.L. Williamson, Ottawa, 1992. ISBN 1-894572-65-3