<Li> Pyrus calleryana--Callery pear </Li> <Li> Pyrus communis--European pear <Ul> <Li> Pyrus communis subsp . communis--European pear (cultivars include Beurre d'Anjou, Bartlett and Beurre Bosc) </Li> <Li> Pyrus communis subsp . caucasica (syn . P. caucasica) </Li> </Ul> </Li> <Ul> <Li> Pyrus communis subsp . communis--European pear (cultivars include Beurre d'Anjou, Bartlett and Beurre Bosc) </Li> <Li> Pyrus communis subsp . caucasica (syn . P. caucasica) </Li> </Ul> <Li> Pyrus communis subsp . communis--European pear (cultivars include Beurre d'Anjou, Bartlett and Beurre Bosc) </Li>

Where do pears grow in the united states