n. a low shrub (Cassandra calyculata), growing in Northern swamps, and having evergreen, coriaceous, scurfy leaves.n. A stiff leathery-leaved fern (Polypodium scouleri) of Western North America having ovate fronds parted to the midrib.n. A northern temperate bog shrub (Chamaedaphne calyculata) with evergreen leathery leaves and small white cylindrical flowers.