A Duxbury man is being summonsed to court on a drug charge after a state trooper allegedly found hallucinogenic mushrooms on his person during a traffic stop on Route 3.

Kevin Sterbenz, 19, of Bassett Brook Lane was the passenger in a vehicle stopped on Route 3 north in Duxbury on Aug. 18, after a state trooper allegedly clocked the driver going 106 miles per hour in a 60 mph zone.

The trooper pulled over the vehicle and, according to his report, observed Sterbenz throw a lit cigarette into the grassy area on the shoulder of the highway. Sterbenz was cited for dropping a cigarette or match into a field or forest.

The trooper then frisked the vehicles’ occupants, citing safety reasons, and found a pill container in Sterbenz’ front pocket, according to the report. Sterbenz allegedly said the bottle contained mushrooms, and the trooper later identified the contents as psilocybin mushrooms, a Class C drug. The bottle was confiscated.

Sterbenz has been summonsed to appear in Plymouth District Court on Sept. 28 for arraignment.