Website/Catalog  (2020)  Page(s) 393.  
 
Elena Castelló, Blas Munné, 1932, H.T., apricot-yellow passing to pinkish yellow, shrub of great vegetation, semi-double, abundant buds, very floriferous, abundant foliage of somewhat dark and glossy green, Mme. Butterfly X Angela Pernet, Gold Medal at Saverne 1931, bibliography: RE

Book  (Apr 1993)  Page(s) 154.  
 
Elena Castello Hybrid Tea, Flowers apricot-yellow to rose [pb], 1932, 'Mme. Butterfly' x 'Angèle Pernet'; Munné, B.

Book  (1958)  Page(s) 99.  
 
Elena Castello. HT. (B. Munné, '32.) Mme. Butterfly X Angèle Pernet. Semi-dbl., apricot-yellow to rose. Vig.; abundant bloom.

Book  (1936)  Page(s) 133.  
 
Castello, Elena (hybrid lutea) B. Munné 1932; apricot-yellow, fades to yellowish pink, semi-double, floriferous, growth 7/10. Sangerhausen