Rhododendron maximum × R.

6/11/2025 · Coastal Maine Botanical Gardens, Boothbay, Maine · ≈ 12 × 8″ (31 × 20 cm)

6/11/2025 · Coastal Maine Botanical Gardens, Boothbay, Maine · ≈ 10 × 6″ (24 × 16 cm)

Kingdom	Plantae	Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin)
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Asteridae	A large class that encompasses asters
Order	Ericales	Tea, persimmon, blueberry, Brazil nut, azalea, many others
Family	Ericaceae	Heath or heather family
Genus	Rhododendron	From Greek rhodos, “rose,” and dendron, “tree”
Species	maximum
×	R.