Origin of depicted specimens: Italy, Piedmont, Maritime Alps, between Colle di Tenda and Cime de Salante (at Italian-French border), 1980 m, limestone, collected by myself September 8, 1968. At this site the corolla lobes are almost white. See also 70154.
At the right margin of 940615, a flower bud of P. grandiflora subsp. rosea can be seen.