Fig. 5.

Anthoceros punctatus (A) and Phaeoceros laevis (B). The 95 % confidence interval (CI₉₅) of differences in means of ‘experimental’ treatment and ‘control’, expressed as a proportion of the ‘control’ mean, i.e. (x – c)/c. This standardized measure allows comparison of different measures. The ‘controls’ were kept moist and in light. Treatments: ABA, 100 μm for 4 h; DES, desiccated; DRK, in the dark for 15–24 h; PLA, plasmolysed; OIL, measurements made under oil (Anthoceros only); DCS, non-stomatal epidermal cells desiccated (Anthoceros only; cell widths only). Missing items are shown by an asterisk.