Fig. 3.

Diurnal and nocturnal, and short- and long-tongued pollinator visitation rates (total visits h⁻¹) in nine populations of Narcissus papyraceus. Data from two monomorphic, three anisoplethic and four isoplethic populations (population numbers 3, 6, 7, 11, 13, 17, 19 and 21; see Table 1 for details). Diurnal short-tongued pollinators of the three types of population are shown separately (grey); long-tongued pollinators are divided into diurnal and nocturnal pollinators, as indicated.