Important American botanist (1810-1888) whose extensive studies of North American flora did more than the work of any other botanist to unify the taxonomic knowledge of plants of this region. His most widely used book, Manual of the Botany of the Northern United States, from New England to Wisconsin and South to Ohio and Pennsylvania Inclusive, commonly called Gray’s Manual, has remained a standard work in this subject. Scarce 2.5 x 4 signed carte-de-visite portrait of Asa Gray in a handsome three-quarter-length pose, signed in the lower border in crisp black ink. In fine condition, with trimmed edges, and some surface loss and notations on the reverse. Consignor notes that this photo derives from the collection of German botanist Eduard August von Regel, the director of the Russian Imperial Botanical Garden in St. Petersburg.
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