柳松菇 Traditional form: 柳松菇 Pinyin (reading): liǔsōnggū Definitions: poplar mushroom (Cyclocybe aegerita) Characters: 柳 - willow tree; pleasure; surname 松 - pine tree; fir tree 菇 - mushroom Traditional characters: 柳 - willow tree; pleasure; surname 松 - pine tree; fir tree 菇 - mushroom