1、 Blade difference

The leaves of Alpine Rhododendron are oblong oval, then ovate oval, or oblong obovate, the top is blunt, and has short process tips, the base is wide wedge, the upper part is light gray to dark grayish green, and the lower part is light yellowish brown to reddish brown. The Rhododendron leaves are oval, obovate or oval, the top is short and tapered, the base is wedge-shaped, dark green above and light white below

2、 The difference between flowers

Alpine Rhododendron is an umbrella inflorescence with small calyx and 5 lobes. It is oval triangular or nearly circular. The Corolla is wide funnel-shaped. The color is light purple, rose to purple, and a few are white. The calyx of Rhododendron has 5 deep lobes, the lobes are triangular long oval, the Corolla is broad funnel-shaped, and the color is rose red, dark red or bright red