. The Pharmaceutical era. onia, viz., Primula ( and 105), Flax (Liuum) etc., and explained the two Pigs. 104 ana 105.—Flowers of one of the Primulas. In104 7a) the style is long and the anthers are situated aboutmidway in the corolla tube. In 103 (a) the style is short,and the anthers are situated at the mouth of the corollatube. Figs. 104 (b) and 105 (b) show the entrance of twobees into a long-styled and short-styled flower, bee in flower 104 lb) obtains the pollen on the forepart of its body which, when it enters flower 105 (b> willlodge on the stigma therein. The
. The Pharmaceutical era. onia, viz., Primula ( and 105), Flax (Liuum) etc., and explained the two Pigs. 104 ana 105.—Flowers of one of the Primulas. In104 7a) the style is long and the anthers are situated aboutmidway in the corolla tube. In 103 (a) the style is short,and the anthers are situated at the mouth of the corollatube. Figs. 104 (b) and 105 (b) show the entrance of twobees into a long-styled and short-styled flower, bee in flower 104 lb) obtains the pollen on the forepart of its body which, when it enters flower 105 (b> willlodge on the stigma therein. The bee on flower 105 (b) se-cures the pollen on its legs and abdomen, and when it entersflower 104 (a) it will deposit the same there. forms of flowers with styles and stamens of differentlengths as being devices on the part of the plant to pre-vent self-fertilization, but encourage and provide forcross-fertilization. Dimorphic Hetcrostyled Plants are such, as in Primu-la species, where there are two kinds of flowers with. and stamens of diflerent lengths. Trimorphic Heterostylcd Pla^its are such, as in Lyth-ium salicaria (Fig. 106), where there are three kinds offlowers with styles and stamens of different lengths. Lcyltimac PoUination or is apparentfrom a comparison of Figs. 104 and 105 that an insectthat visits these dimorphic flowers will have the pollendischarged on two parts of its body. In the one case thepollen is taken up uiwn the head or fore portions of thebody, and the other upon the hind portions of the the former ease it is deposited upon the stigma witha short style, and in the latter upon the one with a longstyle. This form of pollination is natural and |>roper,and was termed by Darwin Legitimate Fertilization, todistinguish it from that form in which the pollen grainsfrom a stamen that did not correspond to the height ofstyle, form of stigma, etc., of a pistil, were depositedthereon. Darwin went to work and produced legitim
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Keywords: ., bookcentury1800, booksubjectdrugs, booksubjectpharmacy, bookyear1
