討論:Rhododendron sanguineum didymoides

山羊百科，林文智老師的植物、山岳、攝影紀錄

1 Ovary at least partly glandular; bud scales usually persistent. (2)

子房至少有部分分枝毛有腺体；芽鳞通常宿存。

+ Ovary eglandular; bud scales usually deciduous. (3)

子房无腺体，有分枝毛；芽鳞通常凋落。

2 (1) Corolla yellow flushed pink, to pink. 435e var. didymoides

+ Corolla deep blackish crimson. 435f var. didymum

3 (1) Corolla crimson. (4)

+ Corolla yellow to pink, rarely white. (5)

4 (3) Corolla bright crimson. 435a var. sanguineum

+ Corolla deep blackish crimson. 435b var. haemaleum

5 (3) Corolla yellow. 435c var. himertum

+ Corolla white, or yellow flushed pink, to pink. 435d var. cloiophorum