To the wandering bird, bee, or insect, a flower is both a billboard and a wayfinding sign—its colors and patterning have evolved to attract pollinators and direct them towards the plant's pollen and nectar. There's one prerequisite: the visual cues require a diurnal pollinator to find the flower. What about bats, then? How do nocturnal, echolocating pollinators navigate a floral terrain? According to an article in Science, they may use acoustics.
Tassels, silk, and glass gems—objet de luxe or, well, grain? If you're thinking of a certain husk-swaddled treasure, you are correct: Corn in general, and a rare heirloom variety in particular. Tassels and silk, with their pollen and ovules, are the so-called trimmings that produce an ear of corn. And glass gem is the name of a beautiful variety with a palette of improbable colors: lilac, merlot, robin's egg blue, pearl, baby pink.