The genus Daphyniphyllum occurs only in southeast Asia, and remains uncommon enough in horticulture that no common name has been settled upon (although Dave Creech of the SFA Mast Arboretum suggests false daphne).
An uncritical glance at the plant would suggest that it is either a rhododendron or closely related, but despite similarities in superficial morphology such as habit and leaf shape, it is not even in the same order of plants. Orders are a level above families, so to compare Rhododendron and Daphniphyllum: Rhododendron is in the family Ericaceae, one of a number of families in the Order Ericales, while Daphniphyllum is in the family Daphniphyllaceae, a member of the Order Saxifragales. With this knowledge, you can draw the conclusion that even though they are still distantly related (different families), Daphniphyllum is more closely related to saxifrages (Saxifraga) than it is to rhododendrons.
Photography resource link: With A New Eye – The Digital National Parks Project by pioneering digital photographer Stephen Johnson. Although the web images are small (though they give you a taste), I can only imagine that the prints are stunning; Stephen uses a 144 megapixel BetterLight Model 6000K.