Simplify the following text for a Grade 8 native English-speaking person.
Original: Peppermint was first described in 1753 by Carolus Linnaeus from specimens that had been collected in England ; he treated it as a species , but it is now universally agreed to be a hybrid .
Simplified: Carolus Linnaeus first described the plant in 1753 , from samples that had been collected in England . He treated it as a species , but modern biology mostly treats it as a hybrid .