1) Dilleniid dicot genus 2) Genus calluna 
(Heather) These small, hardy, evergreen shrubs are found wild in many parts of Europe and some in places of North America. They have little, opposite, four-ranked leaves and spikes of tiny flowers in many different shades. These plants are commonly known as Heather. C. vulgaris, the common Heather, is a small shrub that grows on the mountains and m...
Calluna is a genus of the family Ericaceae of which one species,
[n] - one species
genus Calluna noun one species