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Flora Batava, deel 22, Jan Kops, F.W. van Eeden en L.Vuyck (1906)
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Curtis's Botanical Magazine, deel 65, W.H. Fitch (1839)
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Edwards’s Botanical Register, deel 20, S.A. Drake (1835)
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The wild flowers of California their names, haunts, and habits, M.E. Parsons, M.W. Buck (1906)
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Wild flowers of the Pacific coast, E.H. Thayer (1887)
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Histoire des plantes, deel 10, H.E. Baillon, A. Faguet (1888-1891)
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