6QUAKING ASPEN Populus tremuloides Michx.
42SYCAMORE Platanus occidentalis L.
7COTTONWOOD Populus deltoides Marsh.
43WILD CRAB APPLE Malus ioensis Britton
8BLACK WILLOW Salix nigra Marsh.
44SERVICE BERRY Amelanchier arborea (Michx. f.) Fern. (Amelanchier canadensis Medic.)
9BLACK WALNUT Juglans nigra L.
45COCK-SPUR THORN Crataegus crus-galli L.
10BUTTERNUT Juglans cinerea L.
46RED HAW Crataegus mollis Scheele
11A KEY TO THE ILLINOIS HICKORIES
47WILD PLUM Prunus americana Marsh.
12BITTERNUT HICKORY Carya cordiformis K. Koch
48BLACK CHERRY Prunus serotina Ehrh.
13PECAN Carya illinoensis (Wang.) K. Koch (Carya pecan (Marsh.) E. & G.)
49HONEY LOCUST Gleditsia triacanthos L.
14SHAG-BARK HICKORY Carya ovata K. Koch
50REDBUD Cercis canadensis L.
15MOCKERNUT HICKORY Carya tomentosa Nutt.
51BLACK LOCUST Robinia pseudoacacia L.
16PIGNUT HICKORY Carya glabra Sweet
52TREE OF HEAVEN Ailanthus altissima Swingle
17BLUE BEECH Carpinus caroliniana Walt.
53SMOOTH SUMAC Rhus glabra L.
18HOP HORNBEAM Ostrya virginiana K. Koch
54SUGAR MAPLE Acer saccharum Marsh.
19RIVER BIRCH Betula nigra L.
55SILVER MAPLE Acer saccharinum L.
20BEECH Fagus grandifolia Ehrh.
56BOX ELDER Acer negundo L.
21A KEY TO THE OAKS OF ILLINOIS
57OHIO BUCKEYE Aesculus glabra Willd.
22WHITE OAK Quercus alba L.
58BASSWOOD Tilia americana L.
23BUR OAK Quercus macrocarpa Michx.
59FLOWERING DOGWOOD Cornus florida L.
24YELLOW CHESTNUT OAK Quercus muhlenbergii Engelm.
60SOUR GUM Nyssa sylvatica Marsh.
25POST OAK Quercus stellata Wang.
61PERSIMMON Diospyros virginiana L.
26NORTHERN RED OAK Quercus rubra L. (Quercus borealis Michx.)
62WHITE ASH Fraxinus americana L.
27BLACK OAK Quercus velutina Lam.
63BLUE ASH Fraxinus quadrangulata Michx.
28PIN OAK Quercus palustris Muench.
64CATALPA Catalpa speciosa Warder
29SPANISH OAK Quercus falcata Michx.
65DEPARTMENT OF CONSERVATION Division of Forestry
30BLACK JACK Quercus marilandica Muench.
66Reforestation
31SHINGLE OAK Quercus imbricaria Michx.
67Forest Fire Protection
32AMERICAN ELM Ulmus americana L.
68Woodland Management
33RED OR SLIPPERY ELM Ulmus rubra Muhl. (Ulmus fulva Michx.)
69State Forests
34HACKBERRY Celtis occidentalis L.
70Community Forests
35OSAGE ORANGE Maclura pomifera Schneid.
71Summary
36RED MULBERRY Morus rubra L.
72INDEX OF SCIENTIFIC NAMES
