Summary
The blossoms of many species of European orchids contain a conspicuous blue cyanidinglycoside (Orchicyanin), which has bathochromic characteristics. This makes it possible to observe the formation of this anthocyanin during the development of the blossoms spectrophotometrically. The concentrations of Orchicyanin vary in a way that is typical of the species and genera.
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References
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Some of the measurements were made at the Istituto di Chimica Analitica at the University of Florence in co-operation with Prof. Piccardi and Prof. Pantani, to whom we would like to express our thanks. We also thank the Deutsche Forschungsgemeinschaft for their support of this study.
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Uphoff, W. Identification of European orchids by determination of the anthocyanin concentration during development of the blossoms. Experientia 38, 778–780 (1982). https://doi.org/10.1007/BF01972266
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DOI: https://doi.org/10.1007/BF01972266