Deconica horizontalis is a species of agaric fungus in the family Strophariaceae.
Description The fruit bodies are kidney-shaped when viewed from above. The short stipe is usually off-center. Cap, stipe, and lamellae are brownish in color. In Europe, it typically grows in autumn and winter on hardwood, rarely on conifer wood, and sometimes even on coconut mats, paper, cardboard, etc. A fungus found on old textiles named Melanotus textilis can be considered its synonym.
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