FIGURE 1.

Design of artificial flowers. (a) Shows the combination of traits in each of the 16 flower treatments. For pollen, nectar, linalool and citral, ‘+’ indicates presence, while ‘−’ indicates absence. For colour, ‘Y’ indicates yellow flowers, ‘B’ indicates blue flowers. For size, ‘L’ indicates large flower size and ‘S’ indicates small flower size. The symbol indicates ‘simple disc’, is ‘simple clustered’, is ‘daisy’ and is ‘clustered daisy’ shape. (b) Shows a closeup of an artificial flower including chenille anthers, microcentrifuge tube containing nectar and cotton bud containing odour.