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Species Information
Summary: Features include a cup-shaped or expanded fruitbody with the upper surface varying from ochraceous brown to pale brown, whitish scurfy underside, absent stem, growth on the ground in woods or on lawns, and microscopic characters including finely warted spores. There is considerable variation in the color of the upper surface, and the name Peziza howsei Boud. refers to a violaceous form of Peziza emileia according to Dennis(1), but is maintained separately by Hansen, L.(1). The online Species Fungorum, accessed January 4, 2014 gave the current name as Peziza howsei Roze & Boud. with Peziza emileia Cooke as a synonym.
Peziza howsei (as P. emileia) is found at least in OR, CA, CO, UT, (Larsen), WI, France, (Seaver), United Kingdom (Dennis), and Denmark, Norway, and Sweden, (Hansen). There are collections from BC at the Pacific Forestry Centre determined (as P. emileia) by J. Groves and by J. Ginns.
Upper surface: cup-shaped or finally expanded with wavy margin; spore bearing upper surface varying from violaceous with yellowish tints to fawn, (Dennis), reaching 8-10cm across, at first cup-shaped, becoming expanded and then often irregularly repand, regular in form or contorted; spore bearing upper surface concave, flat, or occasionally convex, even or undulating, ochraceous brown; margin even or more or less lobed, (Seaver), up to 7cm across, spore-bearing surface ochraceous to pale brown, (Hansen)
Flesh: thin (Dennis)
Underside: whitish, often yellowish toward margin; scurfy, (Dennis), white or whitish-farinose (Seaver)
Stem: without stem (Dennis, Seaver)
Microscopic: spores 17-22 x 8-11 microns, elliptic, finely warted, with 2 droplets; asci about 250 x 12 microns; paraphyses slender, straight, slightly clavate, colorless or containing violaceous granules, (Dennis), spores 16-18 x 8 microns, elliptic, becoming sculptured with very minute warts or papillae, colorless, uniseriate; asci reaching a length of 200 microns and a width of 12-15 microns, cylindric or subcylindric; paraphyses slender, strongly enlarged in upper part, septate, (Seaver), spores (17)18-21(22) x 8-10(11) microns, finely verrucose [finely warted] with 2 droplets; paraphyses simple, colorless, (Hansen)
Habitat / Range
gregarious or scattered on damp soil in woods [but in key says "on wood"], (Seaver), gregarious on lawns and in woods, June to October, (Dennis), in hardwood forests (Hansen)
