The origin of floral structures through insect and other agencies . 292 THE STRUCTURE OF FLOWERS, I have also found the sepals ovuliferous in a monstrousform of Violet, which was almost entirely virescent (Fig. 71). Progressive Changes of the Corolla.—For petals tobecome staminoidis far from uncommon. It is a normal con-dition in Atragene (Fig. 44, p. 141), which illustrates thetransition, and in Water-lilies, where a gradual developmentof the anther cells is accompanied by a gradual reduction ofthe petal to a filament. As abnormal instances may be men-tioned, a case of Foxglove which I have e
The origin of floral structures through insect and other agencies . 292 THE STRUCTURE OF FLOWERS, I have also found the sepals ovuliferous in a monstrousform of Violet, which was almost entirely virescent (Fig. 71). Progressive Changes of the Corolla.—For petals tobecome staminoidis far from uncommon. It is a normal con-dition in Atragene (Fig. 44, p. 141), which illustrates thetransition, and in Water-lilies, where a gradual developmentof the anther cells is accompanied by a gradual reduction ofthe petal to a filament. As abnormal instances may be men-tioned, a case of Foxglove which I have elsewhere * describedas having the corolla split up into strap-shaped antheriferousprocesses (Fig. 72), and a Columbine in which the spurs.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfertili, bookyear1888
