HYBRID RHODODENDRONS. 



245 



2. The Reduction of Colours. — White and crimson may produce 

 pink. Pink and crimson may produce pink or rose. Light 

 yellow and golden yellow may produce a primrose-yellow. 



3. The Separation and partial Elimination of one of the 

 Colours. — White and orange may produce pink or yellow. Pink 

 and orange may produce yellow. 



4. The total Elimination of all Colour. — White, orange, or 

 yellow, crossed with pink, may produce white. 



5. The Dissociation of Colours. — A crimson or yellow crossed 

 with orange may produce reddish lobes and a yellow tube, or 

 yellow lobes with roseate throat. 



6. The Prepotency of Colours. — Crimson or yellow may 

 completely overpower yellows and orange, one or other being 

 alone transmitted. 



7. The Restoration of Colours. — Reds and yellows can be 

 restored without a fresh infusion, if the tint be " in the blood " 

 from some previous generation, whether in the corolla or 

 in the anthers and filaments only. 



Illustrations of the Effect of Crossing on Colours. 



1. The Combination of Colours. — The whole colours of the 

 present species of Rhododendron are crimson (R. Lobbii and R. 

 multicolor, var. Curtisii), cerise (R. malayanum), golden-yellow 

 (R. Teysmannii), straw-colour (R. Brookeanum, var. gracile), 

 lemon-colour (R. multicolor), buff-orange (R. javanicum), and 

 white (R. jasminiflorum). 



When red and yellow are united, one, and the more usual, 

 effect is their combination, giving rise to various shades of orange 

 or scarlet, ranging from a golden-orange to scarlet-crimson. 

 When two orange-coloured forms are crossed, the offspring, as 

 might be expected, are mostly characterised by various shades of 

 orange. 



As examples of the above combinations are R. Lobbii (crim- 

 son) x R. Brookeanum, var. gracile (straw-coloured) = Queen 

 Victoria (yellow-orange) and Prince Leopold (red-orange). 



Crown Princess of Germany (pinky-orange) x R. javanicum 

 (orange) = Souvenir de J. H. Mangles (chrome-orange). 



R. javanicum (orange) x R. multicolor, var. Curtisii 

 (crimson) = Nos. 37, 406 (scarlet-crimson). 



