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Subjects: (William Hemsley),; 1786-1859; 1799-1848; 1800-1889; 1809-1884; 1810-1888; 1811-1885; 1811-1887; 1813-1883; Asclepiadaceae; Asclepias; Botanical specimens; Classification; Collection and preservation; Correspondence; Emory, William H; Engelmann, George,; Euphorbia; Euphorbiaceae; Fendler, Augustus,; Gray, Asa,; Milkweeds; Nuttall, Thomas,; Oakes, William,; Plants; Shaw, Henry,; Smithsonian Institution; Texas; United States; Wright, Charles,</div>
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Gray, Asa,</div>
Internet Archive identifier