2.5K views · 297 reactions | Did you know...Acer rubrum, the red maple, can produce all male or all female flowers, or some of both? Male flowers have long stamens that extend beyond the petal, covered in yellow pollen at the tips. In the female, the stigma extends past the petals, ready to catch pollen. It is the denial flower that produces the fruit.   Kirsty Wilson | Royal Botanic Garden Edinburgh | Facebook