Available from - Roses Loubert
https://www.pepiniere-rosesloubert.com/catalogue,3/apolline,994421.html

Has anyone grown Apolline (Bourbon) and Leonie's Apolline (HT) side by side to ascertain whether or not they really are the same rose? I see that in Vintage Gardens Book of Roses the description of LA is of a found rose. The finder (Leonie Bell) thought that the rose she found was Apolline. So far I haven't found any other information on whether the two roses are or are not the same.