Rhododendron aperantum Balf.f. & Kingdon-Ward
19261004 Wild collected in Myanmar
19712476 Cultivated from material wild collected in Myanmar
19712498 Cultivated from material wild collected in Myanmar
19730275 Cultivated from material wild collected in China
19744292 Wild collected in Myanmar
19912241 Cultivated from material wild collected in Myanmar
19971352 Uncertain
Rhododendron apiense Argent
19781745 Wild collected in Malaysia
Rhododendron apoanum Stein
19922743 Wild collected in Philippines
19922747 Wild collected in Philippines
19922749 Wild collected in Philippines
19922792 Wild collected in Philippines
19922797 Wild collected in Philippines
19922800 Wild collected in Philippines
19922806 Wild collected in Philippines
19922812 Wild collected in Philippines
19922815 Wild collected in Philippines
19933034 Wild collected in Philippines
19933037 Wild collected in Philippines
Rhododendron araiophyllum Balf.f. & W.W.Sm. subsp. araiophyllum
19697928 Cultivated material
20021052 Wild collected
Rhododendron arborescens (Pursh) Torr.
19698355 Cultivated material
19771138 Wild collected in United States of America
19791532 Wild collected in United States of America
19970570 Uncertain
20041825 Uncertain
20041826 Uncertain
20111102 Wild collected in United States of America
20111105 Wild collected in United States of America
Rhododendron arboreum Sm.
19568024 Cultivated material
19568164 Cultivated material
19577189 Cultivated material
19598052 Cultivated material
19620923 Wild collected in Nepal
19710031 Cultivated from material wild collected in Nepal
19740833 Wild collected in Nepal
19832478 Cultivated from material wild collected in India
19840908 Wild collected in Nepal
19852108 Wild collected in Bhutan
19881142 Wild collected in Nepal
19902638 Wild collected in Bhutan
19951925 Wild collected in India
19970844 Uncertain
19970898 Uncertain
20040972 Wild collected in Nepal
20160784 Wild collected in Nepal
20160833 Wild collected in Nepal
20160903 Wild collected in Nepal
20160954 Wild collected in Nepal
20161012 Wild collected in Nepal
20170691 Wild collected in Vietnam
20170894 Wild collected in Vietnam
20200248 Wild collected in Vietnam
20240098 Cultivated from material wild collected in Nepal
20240111 Cultivated from material wild collected in India
Rhododendron arboreum Sm. [hybrid]
19568170 Cultivated material
19962498 Wild collected in Nepal
19970750 Uncertain
19970837 Uncertain
19970838 Uncertain
19971510 Uncertain
19971513 Uncertain
20072020 Cultivated material
20072023 Cultivated material
Rhododendron arboreum Sm. 'Rubaiyat'
19832483 Cultivated material
Rhododendron arboreum Sm. 'Sir Charles Lemon'
19754155 Cultivated material
Rhododendron arboreum × decorum var. delavayi (Franch.) D.F.Chamb.
19860970 Cultivated from material wild collected in China
19931816 Cultivated material