"Saddle-Shaped False Morel
These, the Saddle-Shaped False Morels, look more like Helvellas, both in their saddle-shaped forms and their hollow interiors; however, they are considered Gyromitras because of certain spore details and their high Gyromitran toxin MMH content, and are not to be eaten."
In publication, Page 35: "Reflections on the Fungaloids" by B.L. Williamson, Ottawa, 1992. ISBN 1-894572-65-3