pincushion plant diapensia lapponica

acaulis alpine arctic association bald blooming circumpolar cold desert diapensia ecology environment erica fenland fjelds floral flower foliose grass green grower habitat herb herbaceous landscape lapland lapponica lichen lichens loiseleuria marchantiophyta mountain north northpolar perennial pillow pincushion plant plants polar polarizer prairie saxifrage scablike shaped silene stems tundra vegetation