Article from Bean's Trees and Shrubs Hardy in the British Isles
Recommended citation
'Purshia' from the website Trees and Shrubs Online (treesandshrubsonline.
A genus of two species in western N. America, belonging to the same tribe of the Rose family as Dryas, Fallugia, and Cowania. Flowers solitary, almost sessile. Carpels one, rarely two, with a short curved, persistent style. Fruit an achene, crowned by the persistent style. The genus is named after F. Pursh, a botanist of German birth who is the author of Flora americae septentrionalis (1814), one of the first works on the flora of N. America.