While haltingly proficient in French--at least, reading-wise--sometimes a non-native such as myself will wonder what idea first forms in a native speaker's mind on seeing certain words or combination of words. When a native Francophone sees the name Camélia Rose, is the mental picture which first forms a Pink Camellia (camélia rose), or is the initial mental picture more of a rosier (rose plant) which somehow mimics a Camellia? (Or both ideas equally and simultaneously?)

Are such ambiguities addressed and clarified in French usage by the addition of a hyphen, as with the Pernetiana Lyon-Rose? (Not that I am at all suggesting that a hyphen should be added to Camélia Rose.)

My Garden: The intimate magazine for garden lovers, Volume 20 page 450 (1940 )
China Roses
W. L. Carter

Lesmesle belongs to a China type of which there are recorded other varieties whose colour changes were even more startling. Examples of these include Laffay's Courtesan, a pure white changing to fiery red; Prevost's Camellia, pale rose passing to cerise; and Louis Noisette's Bengale à grandes feuilles. whose double blooms opened a delicate rose, changed to carmine, and ended bright purple.

[From "Catalogue des Rosiers cultiveés au Jardin du Luxembourg", by A. Hardy, 1837, p.144:]
Noisette Camelia rose, id [Laffay]