. The different forms of flowers on plants of the same species. Plants; Fertilization of plants. 288 DKECIOUS AND Chap. VII; pearance well-developed. The other half have a perfect pistil, with the stamens short, bearing rudimentary an- thers destitute of pollen; so that these bushes are fe- males. All the flowers on the same plant present the same structure. The female corolla is smaller than that on the poUeniferous bushes. The two forms are shown in the accompanying drawings. Fig. Hermaphrodite or male. Female. EUONYMCS I did not at first doubt that this species existed under
. The different forms of flowers on plants of the same species. Plants; Fertilization of plants. 288 DKECIOUS AND Chap. VII; pearance well-developed. The other half have a perfect pistil, with the stamens short, bearing rudimentary an- thers destitute of pollen; so that these bushes are fe- males. All the flowers on the same plant present the same structure. The female corolla is smaller than that on the poUeniferous bushes. The two forms are shown in the accompanying drawings. Fig. Hermaphrodite or male. Female. EUONYMCS I did not at first doubt that this species existed under an hermaphrodite and female form; but we shall pres- ently see that some of the bushes which appear to be hermaphrodites never produce fruit, and these are in fact males. The species, therefore, is polygamous in the sense in which I use the term, and trioicous. The flow- ers are frequented by many Diptera and some small Hymenoptera for the sake of the nectar secreted by the disc, but I did not see a single bee at work; neverthe- less the other insects sufficed to fertilise effectually fe- male bushes growing at a distance of even 30 yards from any poUeniferous bush. The small anthers borne by the short stamens of the female flowers are well formed and dehisce prop- erly, but I could never find in them a single grain of pollen. It is somewhat difficult to compare the. 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 Darwin, Charles, 1809-1882. New York, D. Appleton
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1903
