Book  (Apr 1993)  Page(s) 375.  
 
Mercurius Large-flowered Climber, light coral-pink, 1940, ('Doubloons' x a Damask rose) x 'Clio'; Horvath. Description.

Book  (1958)  Page(s) 233.  
 
Mercurius. LT. (Horvath; int. Wayside Gardens Co., '40.) (Doubloons X a Damask rose) X Clio. Large, semi-dbl., cupped, light coral-pink; cluster. Fol. glossy. Vig. cl.; profuse seasonal bloom. (28) Pl. Pat. 385 (released).

Book  (1945)  Page(s) 203.  
 
Proof of the Pudding: not a single endorsement

Book  (1944)  Page(s) 208.  
 
Proof of the Pudding: "not so hot"

Magazine  (Dec 1943)  Page(s) vol. 5, no. 6, pp. 119-120.  
 
The Recent Horvath Climbers
R. E. Shepherd, Medina, Ohio
Mercurius is good, but not sensational. It is one of the "weak sisters" of the group in respect to quality, quantity, form and color of bloom. About 50 per cent of the wood is lost each winter and the remaining live wood produces but a fair amount of light pink, semi-double flowers. In the matter of parentage, Mercurius is interesting as it contains the "blood of many races"—Setigera, Austrian Copper, Damascena, Hybrid Perpetual, and probably some Hybrid Tea.

Book  (1940)  Page(s) 65.  
 
R. Marion Hatton. New Roses in America. 
His [M. H. Horvath's] first Setigera hybrid the Climber 'Doubloons' has become quite popular, and is now followed by the Climbers Buff King, 'Federation', 'Hercules', 'Mercurius', 'Polaris' and 'Thor'. These are all husky plants, with heavy canes 8 to 15 feet long, and bloom but once... Mercurius 4 inch cupped flowers of apricot and coral-pink;