Table 2.

Mean (± s.d.) nectar secretion and sugar concentration for plant species grouped according to EFN morphology

Nectary ‘morphotype’	Mean nectar volume (µL)	Mean sugar concentration (%)
Unicellular	1·45 ± 0·95	31·77 ± 0·33
Capitate	1·9 ± 0·42	9·95 ± 9·12
Peltate	0·66 ± 0·01	10·52 ± 4·62
Scale-like	0·42 ± 0·55	39·62 ± 38·56
Flattened	0·68*	8·18*
Hollow	2·05 ± 2·05	8·70 ± 3·25
Transformed	1·79 ± 1·29	17·94 ± 15·74
Elevated	2·8 ± 0·95	34·72 ± 30·55

^*Only one measure of nectar.