. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. HYMENOPTERID FLOWERS ri7 through the holes bitten by this humble-bee. In the Alps, Bombus mastru- catus Gersl. is distinguished above all other humble-bees ' by its constant habit— destructive to the flowers—of getting nectar by forcing an entrance to deep and not easily accessible nectaries.' Lepidoptera here again behave as in Bee Flowers proper. Other visitors are almost without exception pollen-thieves (Knuth, ' Bliitenbesucher,' II, pp. 6 and 7). Herman
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. HYMENOPTERID FLOWERS ri7 through the holes bitten by this humble-bee. In the Alps, Bombus mastru- catus Gersl. is distinguished above all other humble-bees ' by its constant habit— destructive to the flowers—of getting nectar by forcing an entrance to deep and not easily accessible nectaries.' Lepidoptera here again behave as in Bee Flowers proper. Other visitors are almost without exception pollen-thieves (Knuth, ' Bliitenbesucher,' II, pp. 6 and 7). Hermann Miiller ('Alpenblumen,' pp. 499 et seq.) has dealt very thoroughly with the colours of Bee Flowers and Humble-bee Flowers. He calls attention to the fact that flowers of this class which are in bloom at Ike same time and place, are as a rule of diverse colours. Miiller recalls the circumstance that several species of the same genus, with exposed or only partially concealed nectar, are often in flower beside one. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Knuth, Paul, 1854-1899; Knuth, Paul, 1854-1899; Mu?ller, Hermann, 1829-1883; Ainsworth Davis, J. R. (James Richard), 1861-1934. Oxford : Clarendon Press
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisheroxfor, bookyear1906
