. The biology of flowering plants. Phanerogams; Plant physiology; Plant ecology; Plant Physiology. / 386 THE BIOLOGY OF FLOWERING PLANTS bees coincide throughout Europe, Siberia, and America (Fig. 57)-. Fig. 57.—Pollination of monkshood (Aconitum Napellus): A, section through flower ; B, stamens and carpels, young flower; C, stamens and carpels, older flower. Nat. size. (After Miiller.) The small bells of Erica Tetralix, the cross-leaved heath, are visited vigorously by bees and many other insects. The club-like stigma lies in the mouth of the flower, the stamens hang a little further in. They
. The biology of flowering plants. Phanerogams; Plant physiology; Plant ecology; Plant Physiology. / 386 THE BIOLOGY OF FLOWERING PLANTS bees coincide throughout Europe, Siberia, and America (Fig. 57)-. Fig. 57.—Pollination of monkshood (Aconitum Napellus): A, section through flower ; B, stamens and carpels, young flower; C, stamens and carpels, older flower. Nat. size. (After Miiller.) The small bells of Erica Tetralix, the cross-leaved heath, are visited vigorously by bees and many other insects. The club-like stigma lies in the mouth of the flower, the stamens hang a little further in. They dehisce by apical pores. From the basal end of each anther two spurs stick out, reaching the sides of the bell. A bee, clinging to the inflorescence, first touches the stigma ; as it pushes its proboscis past the anthers these, or their appendages, are jarred, and pollen is shaken on the insect's head. Self-pollination may Fig. 58.—Erica Tetra- follow, the pollen falling on the stigma, to; section through r-nA 1 ^\ • r • 1 r 1 flower to show rela- 1 he bell IS otten just too long for the tive position of stig- proboscis of the honey-bee, which then ma and stamens, the . , , c ^ n r 1 latter with anther picrces the base 01 the nower from the outside and so obtains the nectar (Fig. 58). The honeysuckle, Lonicera Periclymenum, is a moth flower with a long corollar tube and a strong evening scent. On the night of its first opening the five stamens project. 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 Skene, Macgregor. New York, The Macmillan Company
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Keywords: ., book, bookcentury1900, bookdecade1920, booksubjectplantphysiology
