The trend continued, with Claude Casimir Gillet with placing it in Aleuria in 1879, and Otto Kuntze in his new Paxina (of which it would later be designated type species) in 1891.

[1] Described independently as Peziza sulcata by Persoon in 1801, it was placed under that name in both Paxina and Acetabula—alongside its precursor as both taxa were still considered separate at the time.

[7] Helvella acetabulum has a deeply cup-shaped fruit body (technically an apothecium) that is up to 8 centimetres (3 inches) in diameter, and 4 cm (1+1⁄2 in) deep.

[10] The spores are smooth, elliptical, translucent (hyaline), and contain a single central oil droplet; they have dimensions of 18–20 by 12–14 μm.

[4] H. griseoalba has ribs that extend halfway up the sides of the fruit body, but the color of the cup is pale to dark gray rather than cream.

[20] The fruit bodies grows solitary, scattered, or clustered together on soil in both coniferous and deciduous woods, typically in spring and summer.

[5] A preference for growing in association with coast live oak (Quercus agrifolia) has been noted for Californian populations.

[21] Although the edibility of the fruit bodies is often listed as "unknown",[21][22] consumption of this fungus is not recommended as similar species in the family Helvellaceae contain varying levels of monomethylhydrazine (MMH).