. Flower ecology. Plant ecology; Fertilization of plants. 48 like Erythrina, are adapted to humming birds. Phaseolus vulgaris L/. The common bean is abund- antly self-pollinated, it lias interesting adaptations for secur- ing cross-pollination. The flower of the bean consists of the green calyx and the corolla, which is made up of five parts, the upper part called the standard, two laleral wings, and a keel made uj) of two petals. The keel is spirally coiled and contains the stamens and pistil. The oblique stigma is on. PIG. 21. Fig. 21 Common bean (P/iaseniuB tmlcraris). 414. the flower. 146.
. Flower ecology. Plant ecology; Fertilization of plants. 48 like Erythrina, are adapted to humming birds. Phaseolus vulgaris L/. The common bean is abund- antly self-pollinated, it lias interesting adaptations for secur- ing cross-pollination. The flower of the bean consists of the green calyx and the corolla, which is made up of five parts, the upper part called the standard, two laleral wings, and a keel made uj) of two petals. The keel is spirally coiled and contains the stamens and pistil. The oblique stigma is on. PIG. 21. Fig. 21 Common bean (P/iaseniuB tmlcraris). 414. the flower. 146. showing spi- rally coiled keel. 448, part of keel removcl, showing style 447, the figure to the right showing style and pollen only. (After Gray) the tip on the style, which is bearded, near the end on which the pollen is discharged. An insect in searching for the nectar at the base of the flower lights on the two lateral petals, coming flrst in contact with the stigma, deposits pol- len from another flower. The weight of the insect causes the style to protrude. In scarlet runner {Phaseolus mul- tiflorus) the arrangement is similar except that the keel with its style is so bent that when pressed down, the style. 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 Pammel, Louis Herman, 1862-1931. [n. p. ] Press of J. B. Hungerford
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectfertili, bookyear1898
