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anemophilous anthers average height average number bees capsules produced colour compared with plants cross-fertilisation crossed and self-fertilised crossed capsules crossed flowers crossed plant flowered crossed seeds crossed with pollen Dianthus dioecious distinct plant entomophilous equal number experiments fertilised plants fertilised with pollen fertility flower-stems four pots fresh stock fully grown genera germinated grains greenhouse height as 100 hermaphrodite humble-bees inches in height insects intercrossed plants Ipomcea large number large pots latter lots of seeds measured Mimulus nectar number of capsules number of seeds offspring open ground opposite sides parent-plants perfect flowers Petunia plants growing plants in Pot plants raised plants self-fertilised pods pollen-grains Primula ratio of 100 Reseda odorata seedlings seedlings raised seeds per capsule self-fer self-fertilised capsules self-fertilised flowers self-fertilised in height self-fertilised plants self-fertilised seeds self-sterile species spontaneously self-fertilised stamens sterile stigma superiority taller tallest crossed plants tallest plants three pots tilised Total in inches variety whilst yielded seeds
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