palhinhaea cernua is a type of freshwater aquatic plant commonly known as "hornwort."

nodding trillium wakerobin perennial plant north america trilliaceae family woodland habitat drooping flower three-petaled spring bloomer forest floor native species understory herbaceous herb wildflower flowering perennial bloom leafy bracts petal coloration plant ecology botany biodiversity floral morphology herbaceous deciduous forest woodland ground cover diversity ephemeral habit natural wildflower plants identification flora taxonomy trillium adaptations reproduction reproductive structures anatomy botanical diversity