Curiously, the sunflower is unusual in that the florets that become seeds begin to form spirals from the rim of the head rather than the center.
Päevalille juures on iseäralik see, et korvikus paiknevad üksikõied, millest tulevad seemned, ei hakka moodustama spiraale mitte alates korviku keskosast, vaid hoopis servast.