Bacopa caroliniana (giant red bacopa)

Japanese name: ウォーターバコパ
Scientific name: Bacopa caroliniana

[Overview]
A submerged to emergent perennial that roots in the mud at the bottom of the water.
The stems grow to 0.5–1 m.
It produces both submerged leaves and aerial leaves.
The leaves are simple and opposite, ovate-elliptic, about 1–2 cm long and thick; when crushed they smell like lemon.
Flowers are borne singly in the axils of the aerial leaves.
The corolla is about 1 cm across, 5-lobed, and pale bluish purple.
The fruit is a capsule.

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