雀榧

From 雀(すずめ) (suzume, “Eurasian tree sparrow”) + 榧(かや) (kaya, “Japanese nutmeg yew”).

雀(すずめ)榧(がや) or 雀榧(スズメガヤ) • (suzumegaya) 

1. stinkgrass (Eragrotis cilianensis)
2. (by extension) love grass (Eragrostis)

• As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary), as スズメガヤ (suzumegaya).