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Cucumis sativus L. - Cucurbitaceae - cucumber, Gurke
Annual creeping vine, native to India and Southeast Asia, commonly cultivated in tropical and temperate regions; leaves broadly ovate-cordate; male flowers campanulate, white-yellow, densely white pubescent; female flowers solitary or fascicled, pedicels pubescent, ovary fusiform; fruit cylindric or oblong, up to 50cm long, usually verrucose.
http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200022616
„Traditional cultivars produce male blossoms first, then female, in about equivalent numbers. Newer gynoecious hybrid cultivars produce almost all female blossoms. They may have a pollenizer cultivar interplanted, and the number of beehives per unit area is increased, but temperature changes induce male flowers even on these plants, which may be sufficient for pollination to occur.“
http://en.wikipedia.org/wiki/Cucumber
„The volatile components of cucumbers and muskmelons were analyzed by a technique which reveals the odorants having the highest odor units (ratio of the concentration to the odor threshold). (E/Z)-2,6-Nonadienal, followed by (Z)-2-nonenal and (E)-2-nonenal were the most significant odorants of cucumbers.“
[Schieberle, P., Ofner, S., & Grosch, W. (1990). Evaluation of potent odorants in cucumbers (Cucumis sativus) and muskmelons (Cucumis melo) by aroma extract dilution analysis. Journal of Food Science, 55(1), 193-195.]