Observations of vascular plants by botanists mainly within the period 1901-1949. Data have been collected in 1,3 x 1 km squares. The entire country of the Netherlands was surveyed. In this (growing) dataset only part of the records are digitized.
Date range: Jan 1, 1860 - Dec 31, 1953
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Aug 20, 2014
May 23, 2014