Biogeography, ecoclines and ecotypes of Betonica officinalis (Lamiaceae)
The distribution of betony (Betonica officinalis L.) is mapped using 390 herbarium specimens from 31 countries (28 European, 2 African and 1 Asian), representing ca 200 localities. Populations from 19 of these localities were used in seed cultivation experiments. Characters that correlate with their biogeography were searched for both in the herbarium material and in the cultivated material. Three
