The vascular plant flora of the anthills at Old Hall Marshes The maximum number of species recorded on any one anthill was 17, whilst the lowest was 4 as shown in Table 3. Table 3. Number of species per anthill When the 10 anthills in each plot arc aggregated, the number of species per plot varies from 15 to 25. It is likely that on plots A, B, C and H the species present could be higher due to the inability to record the early spring flora, but whilst plot H does have the lowest diversity, plots A and B are above the average of 19.5 species per plot. Table 4 lists the number of species per plot. Table 4. Number of species per plot Essex Naturalist (New Series) 20 (2003) 151