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. 2000 Feb;66(2):728–734. doi: 10.1128/aem.66.2.728-734.2000

FIG. 1.

FIG. 1

Macromorphology of Agaricus collections from section Arvenses as grown in compost culture. Morphotype I fruit bodies had pale yellow and, as indicated (u), distinctly umbonate pilei (e.g., 93.7). Morphotype II fruit bodies had uniform, white, nonumbonate pilei (e.g., 94.33). Lower annulus cogwheel formation is indicated (c). Note gross differences in immature sporophore morphology. The photographs of fungi were edited with PhotoShop (v. 4.0; Adobe Systems, Edinburgh, United Kingdom).