The Genus Collinsia. XXIII. A Paper-Chromatographic Study of Flower Extracts from Fourteen Species and Four Interspecific Hybrids

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Abstract
Paper chromatograms of flower extracts exhibited 44 compounds: 9 were seen by visible light, 19 by UV, and 16 by UV using ammonia fumes. The interspecific hybrids yielded compounds not found in either the parental species or the genus; compounds found in the species did not occur in extracts from the interspecific hybrids. Although chromatographic patterns could be used to characterize each species, the patterns did not provide meaningful clues to their relationship. Chromatograms from interspecific hybrids did not indicate the parentage of the hybrids.

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