. "54241" . . . "Pyrus communis proles pyraster" . . _:b75453253 . _:b75453253 "54241" . . "Pyrus communis proles pyraster (L.) Rouy & E.G.Camus, 1901" . . _:b75453253 . "Pyrus communis proles pyraster" . . _:b75453253 "BDTFX id" . "153778" . "(L.) Rouy & E.G.Camus, 1901" . _:b75453253 .