Rhododendron tintinnabellum Danet
20080987 Wild collected in Indonesia
Rhododendron tolmachevii Harmaja
19400183 Cultivated material
19731114 Cultivated material
Rhododendron tomentosum (Stokes) Harmaja
20040800 Wild collected in Finland
20071078 Wild collected in Sweden
20081356 Wild collected in Sweden
20101004 Wild collected in Sweden
20161126 Wild collected in China
Rhododendron tomentosum (Stokes) Harmaja subsp. tomentosum
19763559 Wild collected in Japan
19780135 Wild collected in Japan
20151223 Wild collected in Russian Federation
Rhododendron tosaense Makino
19931405 Wild collected in Japan
Rhododendron traillianum Forrest & W.W.Sm.
19698884 Cultivated material
Rhododendron traillianum Forrest & W.W.Sm. var. traillianum
19301045 Wild collected in China
19614564 Cultivated from material wild collected in China
19795515 Cultivated material
19795519 Cultivated material
19950336 Wild collected in China
19950337 Wild collected in China
Rhododendron trancongii Argent & Rushforth
20022355 Wild collected in Vietnam
Rhododendron × transiens Nakai
19761899 Cultivated material
Rhododendron trichanthum Rehder
19568662 Cultivated material
19698886 Wild collected in China
19913396 Wild collected in China
20141087 Wild collected in China
20221061 Cultivated from material wild collected in China