Figure 2.10–Capture and settlement of a seed of Arceuthobium abietinum on a shoot of Abies sp. A: Seed adhering to a needle by means of its dried viscin coating. B: seed sliding down needle in the hygroscopically swollen viscin mass. C: seed and hygroscopically enlarged viscin mass at the base of a needle where penetration of the host can occur. (R. F. Scharpf)