alligator pear avocado avocado pear black butter pear climacteric fruit cultivar egg-shaped fertility fruit firm food fruit green guacamole Hass variety healthy large berry large seed nutritious ovate pebbled skin perennials persea americana ripe rough soft tree wrinkled alligator-pear avocado-pear butter-pear climacteric-fruit cut fertility-fruit flesh Fuerte-variety large-berry large-seed pear-shaped persea-americana section smooth autumn buildings city close dark daylight distant fall flora foliage gardens greenery homes houses lamp-posts light lighting metropolitan nearby outer-suburbs perspectives plants roads roofs rooves shrubbery street lights street-scenes streets suburban suburbs sunlight trees urban views