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Morchella semilibera, commonly called the half-free morel, is an edible species of fungus [1] in the family Morchellaceae native to Europe and Asia. [2] [3] [4]DNA analysis has shown that the half-free morels, which appear nearly identical on a macroscopic scale, are a cryptic species complex, consisting of at least three geographically isolated species. [5]
M. punctipes is similar to G. gigas and M. rimosipes, but unlike the two, its cap is freely attached to the stipe. [2] M. punctipes is one of three species of fungi commonly referred to as half-free morels, the others being M. populiphila in western North America and M. semilibera in Europe, [1] the latter having smaller spores than M. punctipes.
Morchella, the true morels, is a genus of edible sac fungi closely related to anatomically simpler cup fungi in the order Pezizales (division Ascomycota).These distinctive fungi have a honeycomb appearance due to the network of ridges with pits composing their caps.
The cap of the false morel Verpa bohemica hangs free from attachment to the stipe. Morchella populiphila is morphologically indistinguishable from its eastern North American relative M. punctipes . Morchella populiphila is a distinct morel because of its cap attachment and its habitat, and it is unlikely to be mistaken for other species.
It found 51 people became sick after eating cultivated morel mushrooms at the restaurant in March and April of this year, with three hospitalized and two people ultimately dying.
Another similar group of species are the "half-free" morels, e.g. Morchella semilibera, M. populiphila, and M. punctipes. [24] These typically have a honeycombed cap attached to the stalk for about half of its length, and with ridges that are darker than the pits.
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Other than the anamorph genus Costantinella, the three remaining genera of Morchellaceae are distinguished by ascocarp morphology. Morchella species have an ascocarp with a sponge-like pileus, with a hollow stipe and pileus.