also: のみのふすま
noun
bog chickweed
A small flowering plant (Stellaria uliginosa var. undulata) found in wet areas. The name is usually written in katakana.
湿地でノミノフスマを見つけた。
I found bog chickweed in the marsh.
The name literally means 'flea's futon', from 蚤 (のみ, flea) + 衾 (ふすま, bedding), referring to the tiny leaves that resemble a flea's bed. The exact origin is uncertain, but it is a traditional Japanese plant name.