MYCOLOGY in the Second Empire - MUSHROOMS / Set of more than 30 handwritten notes on in-8 sheets: descriptions from nature (cap, pedicel, tube) with place of discovery (earth, wood, manure etc.), and various observations (smell, colors, etc.), most with drawings, very numerous observations in Castelnau, several localities mentioned, one date noted 28 October 1854, work of a knowledgeable mycologist, mushrooms are named according to their Latin nomenclature.

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