There are multiple cultivars named Lemonberry on the market, each most likely named such for their genetics or their blend of lemon and sweet berry flavors. LEMONBERRY BY NATURAL GENETICS SEEDS Lemonberry is a cross between Shiskaberry and Ohio Lemon G created by the team at Natural Genetics Seeds. 

Per the breeders, it has a sickly-sweet fuel smell yet tastes tart and fruity.