Dogbane family) Pachypodium Pachypodium species Aquifoliaceae ( Holly family) Holly , Ilex species Araliaceae ( Ivy family) Kalopanax , Kalopanax pictus Birch tree (foreground) and maple tree (background) in fall. Betulaceae ( Birch family) Alder , Alnus species Birch , Betula species Hornbeam , Carpinus species Hazel , Corylus species Bignoniaceae