Stapf 1894 - Stapf O (1894) On the Mora of Mount Kinabalu, in North Borneo. Transactions of the Linnean Society of London. 2nd Series: Botany 4(2): 69-263. doi: 10.1111/j.1095-8339.1894.tb00044.x.
There is no corrections for Rhododendron crassifolium yet.