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B.C. Seemann, J. Britten, J. Bot., vol. 2 : t. 20 (1864) [W.H. Fitch]
 [1261]
B.C. Seemann, J. Britten, J. Bot., vol. 2 : t. 20 (1864) [W.H. Fitch] [35]
drawing: W.H. Fitch [6608]
  Missouri Botanical Garden, St. Louis, U.S.A.