H. macrantha flowers have both male and female reproductive organs. To avoid mating with themselves, individual flowers go through a male phase and then a female phase. They rely on hummingbirds to ...

If you were a flowering plant, wouldn't you want your pollen to be received by a plant of your own kind? According to a new study, at least one plant may ensure that happens, by blasting "rival" ...

A team of researchers from the Smithsonian Tropical Research Institute is digitizing images of pollen from more than18,000 plant species from the tropics. These images are being used to train a ...

Spring means flowers blooming, trees blossoming and seedlings sprouting in most of the United States, which leads to pollen being released into the air. Pollen is a fine to coarse, powdery substance ...