Rhododendron 'Ne Plus Ultra'
19973641 Cultivated material
Rhododendron 'Unique'
19568907 Cultivated material
Rhododendron 'Ursula Siems'
19577083 Cultivated material
20210627 Cultivated material
Rhododendron smirnowii × ungernii Trautv.
19623835 Wild collected in Türkiye (Turkey)
19972780 Wild collected in Türkiye (Turkey)
19972782 Wild collected in Türkiye (Turkey)
20231783 Cultivated from material wild collected in Türkiye (Turkey)
Rhododendron ultimum Wernham
20002011 Wild collected in Indonesia
Rhododendron ungernii Trautv.
19568672 Cultivated material
19623836 Wild collected in Türkiye (Turkey)
19692020 Cultivated material
19724005 Cultivated material
19795459 Cultivated material
20052349 Wild collected in Türkiye (Turkey)
20231777 Cultivated from material wild collected in Türkiye (Turkey)
20231778 Cultivated material
20232365 Cultivated from material wild collected in Türkiye (Turkey)
20232368 Cultivated material
Rhododendron uniflorum var. imperator (Kingdon-Ward) Cullen
19271011 Wild collected in Myanmar
19712376 Cultivated from material wild collected in Myanmar
19721910 Cultivated from material wild collected in Myanmar
19970043 Wild collected in China
20040723 Wild collected in Myanmar
Rhododendron uniflorum Hutch. & Kingdon-Ward var. uniflorum
19712362 Cultivated from material wild collected in China
Rhododendron uvariifolium Diels
19962581 Wild collected in China
20161121 Wild collected in China
Rhododendron uvariifolium Diels 'Yangtze Bend'
19734485 Wild collected in China