Article from Bean's Trees and Shrubs Hardy in the British Isles
Recommended citation
'Sphaeralcea' from the website Trees and Shrubs Online (treesandshrubsonline.
A genus of about sixty species, some of them herbaceous, others more or less shrubby, the majority natives of the New World, in both hemispheres, a few in S. Africa. They belong to the same group of the Mallow family as Lavatera and Abutilon.