180 THE AZALEAS OF NORTH AMERICA 



Three forme are figured: "Narcissiflora," "Graf von Meran" and "Sappho." 

 The two first named are in cultivation at the Arnold Arboretum. Of the form 

 "Narcissiflora " R. luteum seems to be the dominant parent, while Graf von Meran, 

 though similar, shows in its color and the less glandular pubescence the influence 

 of R. nudiflorum. 



Rhododendron molle x occidentale = R. albicans Waterer apud 

 Zabel in Mitteil. Deutsch. Dendr. Ges. XI. 30 (1902). For further 

 citations see page 97. 



The following references may be added to those given on pages 97 and 98. 



Azalea "Waterer's New Hardy " Moore in Flor. & Pomol. 1883, 177, t. in 

 part. 



Three forms are figured, stated to have been raised by Anthony Waterer by 

 crossing A. occidentalis with various hybrids. Two of them, "C. S. Sargent" with 

 yellow flowers and "Henrietta Sargent" with bright rose-colored flowers, are 

 probably hybrids with R. Kosterianum forms and may be referred to R. albicans, 

 while "Rubra plena " is probably a hybrid of R. occidentale with one of the double- 

 flowered R. gandavense and does not belong here. 



"New Hybrid Azaleas " W. G. in Gard. XXIX. 550, t. 548 (1886), in part. 



Two unnamed varieties are figured of which the white-flowered one apparently 

 belongs here. 



Azalea albicans [Waterer] apud Gard. XLV. 229, 322 (1894); apud Jour. Roy. 

 Hort. Soc. XVII. XLVI (1895). 



Described as a hybrid between Azalea mollis and A. occidentalis with white 

 flowers just touched with yellow and with an orange suffusion on the upper lobes. 



I am in favor of restricting the name R. albicans to the hybrid forms between 

 R. molle (including perhaps x R. Kosterianum) and R. occidentale, for which it was 

 originally intended, and to refer the last reference given on page 98 to R. mixtum. 

 Of the varieties cited by Wilson, "Graciosa" and "Exquisite" belong certainly 

 to R. albicans, of the other two I am not sure. The forms of R. albicans are char- 

 acterized by large light-colored flowers with rather short tube, puberulous and 

 scarcely glandular outside and with the orange blotch consisting of more or less 

 separate dots and with not or slightly exserted stamens; from R. molle and R. Kos- 

 terianum they differ chiefly in the longer, more cylindric tube and the generally 

 pinkish white color of the flowers. 



Rhododendron gandavense x occidentale. 



Azalea "Waterer's New Hardy " Moore in Flor. & Pomol. 1883, 177, t.; as to 



var. "Rubra plena." 

 "New Hybrid Azaleas " W. G. in Gard. XXIX. 550, t. 548 (1886), as to the 



red-flowered variety. 



To this group I am inclined to refer such forms as "Emelie " and "Roi des 

 Beiges." They are rather difficult to distinguish from the forms of R. gandavense, 

 but may be recognized by the larger flowers with broad open limb, the compara- 

 tively short tube, the many-flowered dense inflorescence. 



Rhododendron occidentale x (arborescens x japonicum). 



Azalea occidentalis x arborescens x mollis Rehnelt in Gartenwelt, XX. 8, t. 

 (1916). 



