Masrahi Y. S., Glochids microstructure and dew harvesting ability in Opuntia stricta (Cactaceae), Journal of King Saud University - Science, 2020, 32(8):3307-3312, doi: 10.1016/j.jksus.2020.09.015
The structure of Opuntia stricta glochids sampled from a population in south-western Saudi Arabia. Electron microscopy and an experiment with a mist stream show droplets merging and moving towards hairs at the base. The paper interprets the process in terms of capillarity and wettability.