HYBRIDS 177 



the pale pink limb indicate a R. nudiflorum form, while the rather broad and large 

 limb with an orange-yellow lobe indicates the influence of R. calendulaceum. 



Azalea calendulacea var. subcuprea Gowen apud Lindley in Bot. Reg. XVI. t. 



1366 (1830). 

 Rhododendron calendulaceum i. subcupreum Sweet, Hort. Brit. ed. 3, 443 (1839). 



This form, which has flowers very similar in shape to those of R. calendulaceum 

 and of a peculiar dull salmon-pink with an orange-colored upper lobe, is said to 

 have been raised at Highclere between A. nudiflora rubescens and A. calendulacea 

 triumphans, which is apparently correct. 



Azalea calendulacea var. lepida Gowen apud Lindley in Bot. Reg. XVII. t. 



1402 (1831). 

 Rhododendron calendulaceum k. lepidwm Sweet, Hort. Brit. ed. 3, 443 (1839). 



This form, which has flowers similar in shape to those of R. calendulaceum but 

 with bright pink tube, white lobes bordered with light pink and with a large 

 yellow blotch on the upper lobe, is stated to have been raised of the same parentage 

 as var. subcuprea. 



Azalea calendulacea var. Stapletoniana Lindley in Bot. Reg. XVII. t. 1407 



(1831). 

 Rhododendron calendulaceum n. Stapletonianum Sweet, Hort. Brit. ed. 3, 443 



(1839). 



The flowers are similar to those of the preceding varieties, but of bright deep 

 rose color with a large yellow blotch on the upper lobe. This is also one of the 

 Highclere Azaleas, but its particular parentage is not stated. 



Azalea pontica var. versicolor Lindley in Bot. Reg. XVIII. t. 1559 (1833). 

 Rhododendron flavum f. versicolor Sweet, Hort. Brit. ed. 3, 442 (1839). 



Though this hybrid which was raised at Highclere was published without indi- 

 cation of its parentage as a variety of Azalea pontica, I cannot see any indication 

 of R. luteum in it. The flowers are rose-red in different shades with a deep orange 

 upper lobe and the tube is conspicuously pilose. A specimen before me collected 

 at Kew in 1880 and labeled Azalea versicolor grandiflora may be this form. It 

 resembles more a form of R. nudiflorum; the corolla is very pilose and only spar- 

 ingly glandular and the leaves do not show the slightest influence of R. luteum in 

 their pubescence and shape. 



Rhododendron luteum x nudiflorum. 



Rhododendron calendulaceum var. fulgidum Hooker in Bot. Mag. LXII. t. 



3439 (1835). 

 Azalea calendulacea var. fulgina Mouillefert, Arb. Abriss. II. 1022 (1897). 

 Azalea calendulacea var. frigida Mouillefert, /. c. 



Hooker states, this Azalea was received from the Glasgow Botanic Garden as 

 Azalea calendulacea var. fulgida, but that it has the appearance of a hybrid between 

 R. ponticum (probably a mistake for Azalea pontica) and R. nudiflorum var. cocci- 

 neum. It certainly does not belong to R. calendulaceum, and may be either a form 

 of R. nudiflorum or, as Hooker suggests, a hybrid of that species with R. luteum. 

 The flowers are bright pink with a whitish upper lobe and their shape is more like 

 that of R. nudiflorum. Mouillefert's two synonyms probably owe their origin to 

 some slip of the pen, for he cites for both "B. M. 3439." 



