Great Laurel, Rosebay Rhododendron

Rhododendron maximum · Ericaceae (Heath family)

AI-generated identification · may be incorrect
Great Laurel, Rosebay Rhododendron

Leaf Morphology

Leaf Type

Simple, evergreen

Shape

Oblanceolate to oblong-lanceolate

Margin

Entire, somewhat revolute (rolled downward at the edges)

Arrangement

Whorled or clustered near the tips of branches in pseudowhorls

Venation

Pinnate with a prominent raised midrib on the underside and obscure lateral veins

Key Features

Large, oblong, evergreen leathery leaves crowded at branch tips; distinctly rolled margins; prominent terminal flower buds; preference for cool, acidic, moist soils

Description

Rhododendron maximum is a large, evergreen, multi-stemmed shrub or small tree known for its dense clusters of leathery leaves and showy summer flowers. It forms impenetrable thickets known as 'rhododendron hells' in the Appalachian Mountains. The bark is brown and smooth on young stems, becoming thin and shredder-like with age. In early summer, it produces magnificent clusters of white to pink bell-shaped flowers marked with greenish-yellow spots.

Habitat

Understory of moist, acidic mountain forests, stream banks, ravines, and damp slopes

Native Range

Native to eastern North America, from Nova Scotia and southern Ontario south to Georgia and Alabama, primarily along the Appalachian Mountains

Identified on 10/11/2026
Great Laurel, Rosebay Rhododendron | Leaf Identifier