. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. l82 ANGIOSPERMAE—DICOTYLEDONES. Fig. 291. Digitalis purpurea, L. (after Henn. MUUer). (i) Young flower in which the anthers of the long stamens are dehiscing; seen from the right side after removal of half the calyx and corolla. To bring the figure into the natural position it must be supposed twisted round to the right till the arrow is vertical. (3) End of the style of do., enlarged; the stigmatic lobes are apposed. (3) Some- what older flower, seen from b
. Handbook of flower pollination : based upon Hermann Mu?ller's work 'The fertilisation of flowers by insects' . Fertilization of plants. l82 ANGIOSPERMAE—DICOTYLEDONES. Fig. 291. Digitalis purpurea, L. (after Henn. MUUer). (i) Young flower in which the anthers of the long stamens are dehiscing; seen from the right side after removal of half the calyx and corolla. To bring the figure into the natural position it must be supposed twisted round to the right till the arrow is vertical. (3) End of the style of do., enlarged; the stigmatic lobes are apposed. (3) Some- what older flower, seen from below after removal of the lower part of calyx and corolla. The anthers of the long stamens have lost their pollen, while those of the short ones have dehisced. (4) End of the style of do., seen from the side ; the lobes of the stigma are diverging. (5) Empty anthers and diverging stigmatic lobes of an old flower, seen from below. Knuth, only the humble-bee Bombus hortorum L. $, skg., on wild plants in Westphalia and Thuringia, and garden ones in Schleswig-Holstein, Mecklenburg, and Pomerania (island of Rugen). Sprengel (besides Thrips), a humble-bee, delineated on his title-page, and probably Bombus ter- rester L. Herm. Miil- ler, 3 humble-bees (i. Bombus agrorum F. j; 2. B. hortorumZ. 5; 3. B. terresterZ. 5); also, as unbidden guests, 2 small bees (Andrena coitana K. 5, and Ha- lictus cylindricus F. 5) and 3 beetles (i. An- therophagus pallens 01.; 2. Dasytes sp.; 3. Meligethes sp.). Loew (Berlin Botanic Garden), the bee An- thidium manicatum Z. $, creeping right into the flowers and skg. Plateau (Ghent Botanic Garden), 4 bees (i. Bombus terrester Z.; 2. B. muscorum F.; 3. Megachile ericetorum Lep.; 4. Anthidium manicatum Z.), a Sphegid (Oxybelus uniglumis Z.), a wasp (Odynerus parietum Pz^, and a Muscid (Musca domestica Z.). H. de Vries (Netherlands), the humble-bee Bombus hortorum Z. 5 (Ned. Kruidk. Arch., Nijmegen, 2. Ser., 2. Deel, 1875). Willis (south coast of Scotland)
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