De variabiliteit van Veronica hederifolia L. in Nederland

The variation and distribution of Veronica hederifolia in the Netherlands is more thoroughly discussed than in the preliminary paper bij DE JONGH (1968). It is shown that only two of the five taxa distinguished by M. Fischer occur, V. hederifolia L. and V. sublobata M. Fischer. The earlier records for V. triloba Opiz refer to V. sublobata. In a rather large number of specimens the combination of morphological characters typical of the two indigenous taxa was not found. Therefore the authors agree with Hartl that Fischer’s microspecies do not deserve specific rank. The correct names on subspecific level appear to be V. hederifolia L. subsp. hederifolia, and V. hederifolia L. subsp. lucorum (Klett & Richt.) Hartl. The distribution of the latter subspecies in the Netherlands is still insufficiently known. It is in all probability much rarer than subsp. hederifolia. Thus far it has been collected only a few times in the eastern part of the country. In the extreme western part, however, it is rather common, especially in the woods behind the dunes.