Rhododendron erosum Cowan
19371020 Wild collected in China
19561111 Uncertain
19698846 Cultivated material
20234021 Cultivated from material wild collected in China
Rhododendron × erythrocalyx Balf.f. & Forrest
19764026 Wild collected in China
20231970 Cultivated from material wild collected in China
Rhododendron euchroum Balf.f. & Kingdon-Ward
19980010 Cultivated material
Rhododendron eudoxum Balf.f. & Forrest var. eudoxum
19240163 Wild collected in China
19716409 Cultivated material
19730187 Cultivated from material wild collected in China
19730276 Cultivated from material wild collected in China
19794034 Wild collected in China
20120867 Cultivated from material wild collected in China
20121352 Cultivated from material wild collected in China
20121353 Cultivated from material wild collected in China
Rhododendron eudoxum var. mesopolium (Balf.f. & Forrest) D.F.Chamb.
20120844 Cultivated from material wild collected in China
20140374 Cultivated from material wild collected in China
Rhododendron evelyneae Danet
20080995 Wild collected in Indonesia
Rhododendron exasperatum Tagg
19291006 Wild collected in China
19568337 Cultivated material
Rhododendron excellens Hemsl. & E.H.Wilson
19940237 Cultivated material
19941651 Wild collected in Vietnam
19951644 Wild collected in Vietnam
20001489 Wild collected in Vietnam
20001555 Wild collected in Vietnam
20001560 Wild collected in Vietnam
20020815 Wild collected in Vietnam
20150034 Wild collected in Vietnam
20150634 Wild collected in Vietnam
20150664 Wild collected in Vietnam
20150675 Wild collected in Vietnam
20170741 Wild collected in Vietnam
20170743 Wild collected in Vietnam
Rhododendron exuberans (Sleumer) Argent
19841213 Wild collected in Malaysia
Rhododendron falconeri subsp. eximium (Nutt.) D.F.Chamb.
19568338 Cultivated material
19577212 Cultivated material
19911994 Wild collected in Bhutan
20171080 Cultivated from material wild collected in Bhutan
20240121 Cultivated material