Japanese green gentian; Swertia japonica
A bitter herb native to Japan, used in traditional medicine. The name literally means 'a thousand shakes' because of its extreme bitterness.
Japanese green gentian is sometimes used as a stomach medicine.
I found Japanese green gentian flowers in the mountains.
alderfly; Sialis japonica
An insect name; this usage is rare and mostly found in specialized contexts. The plant sense is far more common.
The insect called alderfly lives near water.
Kanji spelling is rare; the plant is normally written in kana.
The plant name is written 千振り and traditionally explained from its remaining bitter even after being repeatedly infused or decocted. The origin of the insect name is uncertain.