Wind‐borne Seed and Fruit Movement

SUMMARY Seeds and fruits of widely differing sizes and shapes and which employ different flight styles in wind‐borne movement during dispersal are discussed qualitatively in general aerodynamic terms, and grouped according to aerodynamic rather than botanical features. Most of these groups are considered separately, though not in any great detail, and the salient features of the differing motions belonging to each are described. The response of species, in particular to variations in vertical wind velocities, is mentioned as an important factor affecting‐deposition and dispersal range, and how because of this response some forced deposition may be possible with the introduction of suitably shaped obstacles to wind flow.