. Darwinism; an exposition of the theory of natural selection, with some of its applications. Natural selection; Evolution. 320 DARWINISM CHAP. Chile, where humming-birds are especially plentiful, we find great numbers of red tubular flowers, often of large size and apparently adapted to these little creatures. Such are the beautiful Lapageria and Philesia, the grand Pitcairneas, and the genera Fuchsia, Mitraria, Embothrium, Escallonia, Desfon- tainea, Eccremocarpus, and many Gesneraceee. Among the most extraordinary modifications of flower structure adapted. FIG. 31.—Humming-bird fertilising
. Darwinism; an exposition of the theory of natural selection, with some of its applications. Natural selection; Evolution. 320 DARWINISM CHAP. Chile, where humming-birds are especially plentiful, we find great numbers of red tubular flowers, often of large size and apparently adapted to these little creatures. Such are the beautiful Lapageria and Philesia, the grand Pitcairneas, and the genera Fuchsia, Mitraria, Embothrium, Escallonia, Desfon- tainea, Eccremocarpus, and many Gesneraceee. Among the most extraordinary modifications of flower structure adapted. FIG. 31.—Humming-bird fertilising Marcgravia nepentlioides. to bird fertilisation are the species of Marcgravia, in which the pedicels and bracts of the terminal portion of a pendent bunch of flowers have been modified into pitchers which secrete nectar and attract insects, while birds feeding on the nectar, or insects, have the pollen of the overhanging flowers dusted on their backs, and, carrying it to other flowers, thus cross- fertilise them (see Illustration). In Australia and New Zealand the fine "glory peas" (Clianthus), the Sophora, Loranthus, many Epacrideae and Myrtacese, and the large flowers of the New Zealand flax. 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 Wallace, Alfred Russel, 1823-1913. London and New York, Macmillan and co.
Size: 1698px × 1472px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorwallacealfredrussel18, bookcentury1800, bookdecade1880
