Sherpur

This plant rarely exceeds 15 inches in height. Its thin stems support large green leaves and small yellow leaves. These have a stimulating effect on the auditory system.
Eating sherpur flowers gives a +1 bonus to Wisdom (Perception) checks based on hearing for about 1 hour. Absorbing large quantities (more than one dose) gives a +2 bonus, but the subject then becomes very sensitive, and a high volume can deafen him for 5 minutes. An exceptionally loud volume might even make it permanently deaf.