Sasamorpha borealis (species of bamboo grass)
A species of bamboo grass native to Japan. Botanical term; in everyday contexts, often simply called すずたけ.
Suzutake is a type of bamboo grass that grows wild in the mountains of Japan.
The name すずたけ likely derives from 鈴 (suzu, 'bell') and 竹 (take, 'bamboo'), but the exact origin is uncertain.