The leaves of Rhododendron Alpine are oblong to oval, or oblong obovate, with blunt top and short cusp, wide wedge-shaped base, light gray to dark gray green above, light yellow brown to red brown below. The leaves of Rhododendron are ovate, obovate or oval ovate, the top is short and acuminate, the base is cuneiform, the top is dark green, the bottom is light white.
Alpine Rhododendron has umbels, small calyx, 5 lobes, oval triangle or nearly round shape, wide funnel-shaped corolla, light purple rose color to purple, and few white. The calyx of Rhododendron has 5 deep cracks, the lobes are triangular long ovate, the Corolla is broad funnel-shaped, the color is rose red, dark red or bright red.
