P. grandiflorus Willd.
P. speciosus Schrad
Leaves sharply toothed, usually with tufts of hairs in the vein-axils and bristles along the main veins. As in all forms of
the flowers are white and scentless; they are solitary or in threes, but occasionally the two lateral flowers are replaced by cymes of three or four flowers each. The flowers are cup-shaped when first expanded and occasionally (in f.
Hu) they have four distinct corners (a feature also of the Lemoine hybrid ‘Belle Étoile’). This variety was introduced in 1811 and has usually been known as