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Different bumble bees visiting digitalis purpurea and digitalis purpurea heptandra

Mededelingen Landbouwhogeschool Wageningen 75(20): 1-6
Different bumble bees visiting digitalis purpurea and digitalis purpurea heptandra
In a mixed field containing Digitalis purpurea L. f. heptandra De Chamisso among a majority of the typical D. purpurea, the D. purpurea flowers are regularly visited by large bumble bees of the types Bombus hortorum and B. terrestris, whereas the smaller B. agrorum shows a strong binding to the D. purpurea f. heptandra plants in their flying from one D. purpurea f. heptandra plant to another, disregarding the D. purpurea's. Features of this binding are discussed and some additional observations regarding the relation between seed formation and vegetative propagation are mentioned. Notwithstanding the fact that a number of reports on D. purpurea f. hepatandra exist in earlier and more recent literature, not many botanists appear to have ever seen this deviation.

Accession: 005151950

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