. The origin of floral structures : through insect and other agencies. Plants; Flowers; Flowers. 140 THE STRUCTURE OF FLOWERS. CHAPTER XVI. SECRETIVE TISSUES. Position of Nectaries.*—These honey-secreting organs seem capable of being formed anywhere. Of course they are mainly to be found in flowers, but many plants bear them elsewhere. Thus, some ferns have them on the i-achis ; the common laurel, as also the almond and peach, have two at the base of the petiole; beans and vetches, as well as species of Impatiens, have them on the stipules, as shown in Fig. 43. Bees may be often seen as busy a
. The origin of floral structures : through insect and other agencies. Plants; Flowers; Flowers. 140 THE STRUCTURE OF FLOWERS. CHAPTER XVI. SECRETIVE TISSUES. Position of Nectaries.*—These honey-secreting organs seem capable of being formed anywhere. Of course they are mainly to be found in flowers, but many plants bear them elsewhere. Thus, some ferns have them on the i-achis ; the common laurel, as also the almond and peach, have two at the base of the petiole; beans and vetches, as well as species of Impatiens, have them on the stipules, as shown in Fig. 43. Bees may be often seen as busy about the young shoots of laurel as if they were visiting flowers. Acacia sphcerocephala has a large one, on the upper side of the petiole, which sup- plies those ants with food which take up their abode in the gigantic stipules peculiar to that * Les Nectaires, Ann. des Soi. Nat., Bot., vol. iii., p. 1, 1879; also, Etudes Anatomiques et Physiologiqvss des Nectaires, Coinpt. rend., torn. IszXTiii., p. 662,1879; also. Cross and Self Fertilination of Plants, p. 402; also, Stadler, Beitr. z. Kenntniss d. Nectarieen u, Biologie d. Bliithen. t See Belt's Naturalist in Nicaragua; also a paper by F. Darwin, in Trans. Lin. Soc., on the same 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 Henslow, George, 1835-1925. New York : Appleton
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