noun
Tsukushi rhododendron
A variety of Rhododendron metternichii native to the Tsukushi region (northern Kyushu). Botanical term; in everyday contexts, usually referred to by the katakana name.
ツクシシャクナゲは九州北部の山地に自生する。
Tsukushi rhododendron grows wild in the mountains of northern Kyushu.
庭にツクシシャクナゲを植えた。
I planted a Tsukushi rhododendron in the garden.
General term for rhododendron; ツクシシャクナゲ is a specific regional variety.
From 筑紫 (Tsukushi, an old name for the region of northern Kyushu) + 石楠花 (shakunage, rhododendron). The exact derivation is straightforward; the plant is named after its native region.