Table A2 Measurements and literature sources of floral dimensions for all non-graminoid flowering species. Floral units describe the scale at which species were counted in quadrats (flower, inflorescence, or capitulum in Asteraceae species). ‘l ’ is length in mm of corolla opening (or receptacle length for capitula), ‘w ’ is width in mm of corolla opening (or receptacle width for capitula), ‘h ’ is height in mm, measured from the receptacle to the longest sexual organ (stamen or pistil), and ‘V ’ is floral volume in mm3, calculated using the formula for volume of an elliptic cylinder (\(\mathrm{V}\mathrm{\ }\mathrm{=}\mathrm{\ }\mathrm{\pi}\mathrm{\ }\mathrm{\times}\mathrm{\ }\frac{\mathrm{l}}{\mathrm{2}}\mathrm{\ }\mathrm{\times}\mathrm{\ }\frac{\mathrm{w}}{\mathrm{2}}\mathrm{\ }\mathrm{\times}\mathrm{\ }\mathrm{h}\)). Inflorescence volume was calculated by multiplying floral volume by the average number of flowers per inflorescence and was left blank when individual flowers were counted rather than inflorescences. Measurements were made on five individuals per species, or values were obtained from literature sources.