
1) False morel
Found on
https://www.crosswordclues.com/clue/helvella

Helvella is a genus of ascomycete fungus of the Helvellaceae family. The mushrooms, commonly known as elfin saddles, are identified by their irregularly shaped caps, fluted stems, and fuzzy undersurfaces. They are found in North America and in Europe. Well known species include the whitish H. crispa and the grey H. lacunosa. They have been reporte...
Found on
http://en.wikipedia.org/wiki/Helvella

(from the article `cup fungus`) The edible snow mushroom (Helvella gigas) is found at the edge of melting snow in some localities. Caution is advised for all Helvella species. H. ...
Found on
http://www.britannica.com/eb/a-z/h/35

Helvella is a genus of large terrestrial fungi belonging to the family of the Ascomycetes. They are characterised by the sporidia being contained in small cases or asci, by the hymenium being even and exposed, and by the pileus having free margins.
Found on
http://www.probertencyclopaedia.com/browse/BH.HTM

[
n] - any fungus of the genus Helvella having the ascocarps stalked or pleated or often in folds
Found on
http://www.webdictionary.co.uk/definition.php?query=helvella
No exact match found.