Phacelia - Phacelia tanacetifolia

Flora Batava, deel 22, Jan Kops, F.W. van Eeden en L.Vuyck (1906)


Curtis's Botanical Magazine, deel 65, W.H. Fitch (1839)


Edwards’s Botanical Register, deel 20, S.A. Drake (1835)


The wild flowers of California their names, haunts, and habits, M.E. Parsons, M.W. Buck (1906)


Wild flowers of the Pacific coast, E.H. Thayer (1887)


Histoire des plantes, deel 10, H.E. Baillon, A. Faguet (1888-1891)


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