Table 2. Cross-tabulation of sampled flowers by type and shape (upper half), and by type and hexagon sector (lower half).

Data expressed as a frequency of observations. Non-significant relationship between the variables (NS), non-linear relationship between predictor and response variable (NL), negative linear relationship (LN), positive linear relationship (LP). Shape of the flower abbreviated as Boat shape (BS), Open (O), Open tubular (OT), tubular (T) whereas flower colours in hexagon colour space are abbreviated as BLUE (G), BLUE-GREEN (BG), GREEN (G), UV-GREEN (UG), ULTRAVIOLET (UV) and UV-BLUE (UB) as defined by [74].

Flower type Flower shape	NS	NL	LN	LP	Shape frequency
BS	0.000	0.033	0.033	0.067	0.133
O	0.000	0.167	0.067	0.200	0.433
OT	0.033	0.033	0.000	0.067	0.133
T	0.100	0.133	0.000	0.067	0.300
Type frequency	0.133	0.367	0.100	0.400
Flower colour					Colour frequency
B	0.033	0.200	0.067	0.067	0.367
BG	0.150	0.100	0.000	0.200	0.450
G	0.000	0.091	0.091	0.000	0.182
UB	0.000	0.111	0.000	0.222	0.333
UG	0.000	0.167	0.000	0.667	0.833
Type frequency	0.133	0.367	0.100	0.400