Mycologia 105(5): 1278. 2013.
Common Name: none
Scattered to gregarious to cespitose under oaks. Common late fall, winter, early spring.
Edible when cooked.
Helvella dryophila and Helvella vespertina have historically hidden under the name Helvella lacunosa, a European species not known to occur in North America. Recent DNA sampling has shown at least 11 species in the Helvella lacunosa 'group' in North America. The two common California species can best be distinguished by their habitat, Helvella dryophila is associated with oaks and Helvella vespertina is associated with conifers.
For more information see Nguyen et al.
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Nguyen, N.H., Landeros, F., Garibay-Orijel, R., Hansen, K. & Vellinga, E.C. (2013). The Helvella lacunosa species complex in western North America: cryptic species, misapplied names and parasites. Mycologia 105(5): 1275-1286. (PDF)
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