|Major Groups > Cup Fungi > Peziza ammophila|
[ Ascomycetes > Pezizales > Pezizaceae > Peziza . . . ]
by Michael Kuo
Brown cup fungi like Peziza ammophila are notoriously difficult to identify with certainty--but this little guy grows on sand dunes and beaches, making it fairly easy to separate from other, superficially similar brown cups. As Peziza ammophila matures, it emerges from the sand and splits, often peeling backwards and forming a star shape reminiscent of earthstars like Geastrum saccatum (but without the central puffball).
I have never collected Peziza ammophila, but I have examined a specimen sent to me by West-Coast correspondent Wendell Wood, who found the illustrated specimens in a sand dune near Tolowa Dunes State Park in California.
Literature for the genus Peziza is hard to come by, and there may be several genetically distinct species "masquerading" as Peziza ammophila. Additionally, synonymy for the species is confusing and poorly documented. Seaver's 1928 treatment of The North American Cup-Fungi is still the most comprehensive Peziza source available, and he does not treat Peziza ammophila--though he does describe Sepultaria arenicola and Sepultaria arenosa as sand-loving species. While I suspect that these names should be regarded as synonyms for Peziza ammophila, the synonymy has not been officially published, to my knowledge.
Ecology: Saprobic, growing alone or in clusters in sand, on or near beaches and sand dunes; spring through winter; probably widely distributed in North America.
Fruiting Body: Cup-shaped and buried in the sand when young, typically emerging somewhat and splitting on the edges, often in a star-shaped manner, and peeling outwards; pale to dark brown on upper and under surfaces; often with a more or less central pseudo-stem, where sand grains are bound together with mycelium. Flesh fragile and brittle.
Microscopic Features: Spores 14-16 x 10 µ; smooth; elliptical. Asci eight-spored; with blue tips in Melzer's Reagent; up to 200 x 15 µ.
Cite this page as:
Kuo, M. (2005, July). Peziza ammophila. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/peziza_ammophila.html.