Impletion

Irregular metamorphoses of flowers are extremely common, and usually consist either of an actual muliplication of petals, or of the transformation of stamens and pistils into petals ; the effect of these chages being the formation of double flowers, the impletion of which appears to take place in different ways in different plants.

The greater the impletion of the artery during systole, the longer is the interval between the primary expansion and the acme of distension, and the bolder the curve which indicates it.