in botany; a genus of plants belonging to the class of polygama, and order of danae. The exterior calyx of the hermaphrodite flower is triplobious; the interior is quinquedentate and cartilaginous. The corolla is funnel-shaped and quinquedent. There are four stamens; and there is one seed in the interior calyx calyptrate. The female flower is similar, has no interior calyx nor fruit. There are three species, the pinafra, ericoides, and cornua, all foreign plants.