Department of Paleobotany, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia; specimen #P36943; collected by Henry Fair and C. E. Fernquist, 1922.
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Uploaded a work by Cynthia Walden from [http://n2t.net/ark:/65665/33b5849c0-cf90-462f-b317-81a13eb37bbd Smithsonian Ulmus perqusti Knowlton USNM P36942] with UploadWizard