pollen-sacs

Updated: June 9, 2025

The pollen-sacs are as a rule barren, the mother-cells undergoing atrophy, while normal grains are seen but rarely. Likewise the ovaries are rudimentary, but Wittmack has observed the occasional production of ripe grains from these abnormal florets. The scale is seldom seen to extend any farther upwards than the supernumerary flower.

Hugo de Vries - Species and Varieties, Their Origin by Mutation