HYBRID RHODODENDRONS. 



279 



In no species is there any calyx, thus emphasizing the rule 

 that when flowers grow in corymbs, heads, umbels, &c, there 

 is a great tendency in many cases to arrest the calyx, as may 

 be illustrated by Caprifoliacea?, Umbelliferae, Rubiacea?, Com- 

 posite, &c. 



The corolla is quite, or much more regular than in Rhododen- 

 drons of other countries, and the stamens are symmetrically 

 arranged, and not declinate. 



Fig. 44. 



Corollas of Hybrids and Crosses. 



h, Monarch. Genealogy. — B.jas. x B.jav.= Princess Royal ; 

 Pr. Royal x B. y<2s.=Princess Alexandra; Pr. Alex, x Duchess 

 of Edinburgh (=B. LobbiixB. Brook.)— Monarch. 



This cross, therefore, contains B. Brook., B. Lobbii, B. jas. 

 (twice), and B. jav. (fig. 43, a, b, c, and e). 



The form of the corolla closely approximates that of the last 

 species introduced (Duch. of Edin., fig. 43, I), but the tube is 

 slightly shorter and quite straight, the curvature of the former 

 (due to B. Lobbii) being lost by the effect of the female parent 

 (Pr. Alex.). 



The colour is a yellow- orange, the white of the female parent 

 having reduced the red of the scarlet male parent. The anthers 

 have now become a deep crimson. 



i, No. 329. — This hybrid, which is the result of crossing B. 

 jasminiflorum (fig. 43, c) with B. multicolor, var. Curtisii 

 (fig., 43 d), shows how the flower (especially the tube) is 

 intermediate in size, while the male parent has imparted its 

 crimson colour to the flower. This is one of the multicolor 

 section. 



k, Hippolyta. Genealogy. — B. jas. x B.jav.=~Pnncess Royal ; 

 Pr. Royal xB. Brook.— ~Pnncess Frederica ; Pr. Fred. xB. jav. 

 =Queen of the Yellows; Qn. of Yell. xB. mult., var. Curt.= 

 Hippolyta. 



This cross therefore contains four species, and one of them 

 twice. 



The form is identically the same as that of the last male 

 parent, or B. mult., only larger. The colour is rather more scarlet 

 than crimson in consequence of the infusion of yellow by the 

 female parent. 



