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Squill of the family Hyacinthaceae is a small bulb perennial. The present study on flowering and pollination of Scilla sibirica Andr., S. sibirica ‘Alba’, and S. bifolia L. was conducted in the years 1995, 1997, and 1999 in the Botanical Garden of the Maria Curie-Skłodowska University in Lublin. The plants flowered from the end of March until the middle of May. The duration of flowering of individual taxa was similar and it averaged 20 days (Scilla sibirica), 21 days (S. sibirica ‘Alba’), and 23 days (S. bifolia). The opening of flower buds always started around 9.00 am and lasted, depending on the taxon, until 3.00 pm (Scilla sibirica ‘Alba’), 4.00 pm (S. bifolia), and 5.00 pm (S. sibirica). The flowers were visited by bees (Apoidea), primarily the honey bee (Apis mellifera L.), bumblebee (Bombus L.), and solitary bees. Numerous honey bee foragers were observed; they bit through the anther walls and even attempted to open still closed flower buds in order to reach the pollen.
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Runner bean (Phaseolus coccineus L.) is, after common bean (Phaseolus vulgaris L.), the second most important species, both around the world and in Poland. However, as compared to common bean, runner bean was not so well recognized, which is indicated by reports from literature. Among the most important values of this bean species are large and very large seeds (the weight of one thousand seeds: 900–3000 g), which, with respect to their nutritional value rival common bean seeds. There are forms of it that differ in plant growth type, morphological features of flowers, pods and seeds, as well as in the manner of use – green pods and for dry seeds. On the basis of world literature, results of the author’s own studies, as well as the studies conducted in Poland by her collaborators and other authors, the issues of development biology, agrotechnical and environmental requirements, flowering and pollination of this allogamous species were presented, as well as yielding, sensitivity to herbicides, effect of pathogenic factors upon generative organs, as well as chemical composition of runner bean seeds and pericarp (Phaseoli pericarpium).
Seven habitats of agroecological landscape of Sępopolska Flatland were investigated to classify the structure of wild bee communities. They were compared in order to obtain most distinctive and valuable habitat for wild bees. Significant differences were also linked with species occurrence and abundance, displaying preferable habitats for specific species in analysed landscape.
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