noun
Adenostemma lavenia; swamp daisy
A species of flowering plant in the Asteraceae family, found in wetlands. The Japanese name literally means 'swamp radish'.
ヌマダイコンは湿地に生える多年草です。
Adenostemma lavenia is a perennial herb that grows in wetlands.
この辺りの沼では、夏になるとヌマダイコンの白い花が見られます。
In the marshes around here, you can see the white flowers of Adenostemma lavenia in summer.
The name is a compound of 沼 (numa, 'swamp') and 大根 (daikon, 'radish'), referring to its habitat and possibly the shape of its leaves or roots. The exact derivation is uncertain.