FERDINAND BERNHARD VIETZ Austria (1772) / (1815) "Varieties of mushrooms" Four etchings - Agaricus integer purpureus. (Purple color). - Agaricus integer sanguineus, Ruber, Brunus. (sanguine, red, brown). - Agaricus lactifluus brunus, Fuscus, Argenteus. (dark brown, silver). - Agaricus lactifluus aureus. (milky and golden). Measurements: Frame: 23 x 15.5 cm each

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