Costus subsessilis

Japanese name: コスツス スブセッシリス
Scientific name: Costus subsessilis

[Overview]
A slow-growing perennial 10–30 cm tall.
The stem is short and fleshy.
The leaves are simple, spirally alternate, elliptic, 30 cm long, and hairy on both surfaces.
The leaf margins are entire.
Bright yellow flowers about 7.5 cm across bloom at the stem tips.
The petals are short and trumpet-shaped, and one staminode develops greatly into a petal-like, lip-shaped structure.
The flowers are fragrant.
The fruit is a capsule.

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