Yes, this is a Black Hollyhock.
Isn’t it’s dark glossy petals beautiful?
I grow this dark horse of a hollyhock between my lovely Compte de Chambord antique roses, Japanese Maple and the raspberries so it’s surrounded by shades of red and pink. It looks quite lovely among it’s companions.
That’s one black flower that I’ve never seen before!
I’m really running out of superlatives for your photos. They are so good. YOU are so good! I enjoy seeing the pollen here.