40 A FIELD GUIDE IN NATURE-STUDY 



Fraxinus quadrangulata: blue ash 



Ginkgo triloba: maidenhair 



Gleditsia triacanthos: honey locust 



Gymnocladus dioecia: Kentucky coffee 



Juglans cinerea: butternut 



Juglans nigra: black walnut 



Juniperus communis: juniper 



Juniperus mrginiana: red cedar 



Larix laricinia: larch or tamarack 



Moms alba: white mulberry 



Moms rubra: red mulberry 



Nyssa aquatica: tupelo 



Nyssa syhatica: sour gum, pepperidge 



Platanus occidentalis: sycamore 



Picea excelsa: Norway spruce 



Pinus banksiana: scrub pine 



Pinus strobus: white pine 



Pinus syhestris: Scotch pine 



Populus alba: white poplar 



Populus balsamifera: balsam poplar 



Populus deltoides: cottonwood 



Populus grandidentata: large-toothed aspen 



Populus heterophylla: downy poplar 



Populus nigra italica: Lombardy poplar 



Populus tremuloides: aspen 



Prunus serotina: black cherry 



Ptelea trifoliata: hop 



Pyrus americana: mountain ash 



Pyrus ioensis: prairie crab 



Quercus alba: white oak 



Quercus macrocarpa: bur oak 



Quercus rubra: red oak 



Quercus velutina: black oak 



Rhus glabra: common sumac 



Rhus typhina: staghorn sumac 



Robinia pseudacacia: black locust 



Salix nigra: black willow 



Thuya occidentalis: arbor vitae 



Tilia americana: basswood 



Toxylon pomiferum: osage orange 



Ulmus americana: white elm 



Ulmus fuha: red elm, slippery elm 



