Book  (Jun 1992)  Page(s) 205.  
 
Belle Portugaise ('Belle of Portugal') Cayeux, ca. 1905. Hybrid Gigantea. From R. gigantea x ? 'Reine Marie Henriette'. [Author cites several sources, which see.]

Book  (1984)  Page(s) 146-147.  
 
‘Belle Portugaise /’Belle of Portugal’ = Hybrides européens de Rosa gigantea. Rosa gigantea x ‘Reine Marie-Henriette’ ou x ‘Souvenir de Mme Léonie Viennot’. Obtenu par Henri Cayeux en 1903, au Jardin Botanique de Lisbonne – maintenant naturalisé en Californie. Fleurs: 10 à 15cm de diamètre. Boutons: 10cm de longeur. Feuillage plus ou moins persistant suivant les climats… feuillage vert-gris aux folioles pointues… pétales un peu pliés et les bords roulés vers l’extérieur, formant des corolles doubles, mais lâches. Leur nuance saumon ivoirin s’assombrit sur les revers…

Article (website)  (1982)  Page(s) 10.  
 

Belle Portugaise​ (Climber)​ Pointed buds opening to large semi-double flowers of pale pink.​ A vigorous rose with profuse foliage.​ Early flowering, but needs some protection from the most severe winters.​1903.​ (SP)​ 20 x 10.

Book  (1978)  Page(s) 147.  
 
'Belle Portugaise' Climber    Pink  Midsummer     P3  H2 
Given a warm wall and some shelter, this can be grown outdoors in England, as was successfuly shown for some years  at the Royal Horticultural Society's gardens in Wisley. But the operation will normally be at risk in cold climates; it is a rose for places like California and the Canary Islands, or even the south of France. It was raised by Henri Cayeux, of the Lisbon Botanical Garden, and introduced in 1903 or shortly after. Both the dates and parentages vary in different authorities, but there is agreement that one of the parents was R. gigantea. This climber is light pink, with the outside of the petals deeper; the flowers are double, and open loosely, that is to say the large petals are well apart. It has a silky look of summer about  it. The English version 'Belle of Portugal' is sometimes used, although no great linguistic difficulty would seem to be solved thereby. 

Article (misc)  (1960)  Page(s) 109.  
 
Belle Portugaise Moderate to good crop [of hips] most years. Triploid.

Magazine  (Jun 1951)  Page(s) 2. trimester, p. 58.  
 
[From the article "Le Rosier sur la Côte d'Azur", by Joseph Baccialone, Ingénieur Horticole, Chef de Service des Jardins de la Ville d'Antibes, pp. 46-59]
Le climat du Midi est particulièrement favorable à certaines races très vigoureuses qui peuvent couvrir de grands espaces. Nous citerons parmi les plus intéressants :  ...R. Gigantea et ses hybrides : Non remontants, mais de végétation luxuriante et à fleurs très grandes demi-doubles. Ne sont utilisés avec succès que si on dispose de beaucoup de place. En plus du type blanc citons : — Belle Portugaise, rose nacré.

Website/Catalog  (1948)  Page(s) 7.  
 
Belle of Portugal. H. Gigantea. Rampant is the word for the "Portugese Hussy." Its great canes refuse to be confined, and from them hang in great profusion, enormous, semi-double, pale-pink blooms of rare beauty, over a long spring season only....

Book  (1947)  Page(s) 19.  
 
Belle Portugaise...Cayeux '03.  .Not hardy north; almost naturalised in Calif.

Book  (1940)  Page(s) 18.  
 
Belle of Portugal. See 'Belle Portugaise'.
Belle Portugaise ('Belle of Portugal') HG. (Cayeux [no date given].) R. gigantea x 'Reine Marie Henriette' (?) [sic]... light flesh-pink... Not hardy north.

Book  (1936)  Page(s) 576.  
 
Portuguoise, Belle (hybrid gigantea) Cayeux 1905; Sv. Mme. L. Viennot X ? R. gig.; mother-of-pearl-pink to flesh-pink, shaded salmon, large, semi-double, opens, lasting, solitary, fragrance 3/10, once-blooming, long blooming, long strong stems, dense light green foliage, growth 9/10, climbing, 4 m.