The flowering head of Capitate valerian is typically 2-3 cm wide. The budding inflorescence is purple, and the flowers on the blooming inflorescence are tubular, white or slightly pink
Labrador lousewort is a 5-15 inch partially parasitic plant with an inflorescence of yellow flowers. Native to Alaska, Canada and Greenland it grows in bogs and tundra.
The Arctic primrose tends to live in very wet soil and stream beds. It grows to be about 10-12 cm tall. It has 5 lobed pink or purple-pink petals.