Flowering and Nectar Secretion in two Forms of the Moldavian Dragonhead (Dracocephalum moldavica L.) – A Plant with Extraordinary Apicultural Potential
Marta Dmitruk, Elżbieta Weryszko-Chmielewska, Aneta Sulborska
Flowering Phenology of Selected Linden (Tilia L.) Taxa in Relation to Pollen Seasons
Agnieszka Dąbrowska, Krystyna Piotrowska-Weryszko, Elżbieta Weryszko-Chmielewska, Ryszard Sawicki