8vo (205 x 115 mm). Engraved folding frontispiece (bound to face p.1) and one engraved folding plate. (Some minor spotting, minor worming to gutter margin of first and last few leaves.) Contemporary mottled calf (rebacked preserving old lettering-piece and endpapers). Provenance: a few early annotations on flyleaf; engraved plate tipped to front free endpaper.

FIRST AND ONLY EDITION OF LINNAEUS'S MOST IMPORTANT MEDICAL WORK, including the Linnaean names of over 500 medicinal plants, including proper genera and species for several, and noting their medicinal effects.  Linnaeus never completed subsequent editions of his work, although unauthorized editions based on his dissertations on animals (Book II) and minerals (Book III) were published in 1763. VERY RARE: according to American Book Prices Current, only two copies of this work have appeared at auction in the last 45 years.  Soulsby 948; Wellcome III, 526.