Gary a ovata . Shagbark Hickory. Native. Mostly on tablelands, sometimes on 



slopes. 



Cornus alternifolia . Alternate-leaved Dogwood, Pagoda Dogwood. Native. 

 Slopes. Infrequent. May-June. 



Cornus racemosa . Gray Dogwood. Native. Slopes. May- July. 



Gornus stolonifera . Red-osier Dogwood. Native, Slopes, especially toward 

 Lake. Frequent. May-September. 



Crataegus species. Hawthorns. Several species occur on slopes and tablelands. 

 Frequent. April-May. 



Fagus grandifolia . American Beech. Native. Slopes. Seen in only 2 ravines. 



Fraxinus americana . IJhite Ash. Native. Slopes. Frequent. 



Hamamelis virginiana . Witch-hazel. Native. Slopes. Common. September-December. 



Lonicera dioica . Red Honeysuckle. Native. Slopes and tablelands. Occasional. 

 May- June. 



Lonicera species. A number of introduced species of Honeysuckle have been 



planted in the ravines and along the bluffs facing Lake Michigan. These 

 include: Lonicera maackii , Amur Honeysuckle; Lonicera morrowii . Morrow's 

 Honeysuckle; and Lonicera tatarica , Tatar ian Honeysuckle. 



Juglans nigra . Black Walnut. Native. Bottom. Infrequent. 



Menispermum canadense . Moonseed. Native. Slopes. Frequent. 



Morus alba , l^ite Mulberry. Introduced from China. Slopes. Infrequent. 



Ostrya virginiana . Hop-hornbeam. Native. Slopes. Common. 



Parthenocissus quinquefolia o Virginia Creeper. Slopes and bottoms, sometimes 

 climbing trees. Common. Native. 



Philadelphus species. Mock-orange. Introduced. Commonly cultivated and 

 either planted and persistent or escaped in the ravines. 



Pinus strobus . \^ite Pine, Native, but most plants presently in the ravines 

 probably deliberately planted. 



Populus deltoides . Cottonwood. Native. Mostly in bottoms, sometimes on 

 slopes, especially toward Lake, Common. 



Prunus pensylvanica . Pin or Fire Cherry. Native. Slopes. Infrequent. April-June. 



Prunus serotina . Black Cherry. Native. Slopes. Common. May- June. 



Prunus virginiana . Choke Cherry, Native. Slopes. Common- April- June. 



Quercus alba . White Oak. Native. Mostly on tablelands, sometimes on upper 

 slopes. Common. 



Quercus rubra . Red Oak. Native. Lower slopes and bottoms. Common. 



Rhamnus cathartica . Common Buckthorn, Introduced from Eurasia. Common, May. 



Rhus radicans . Poison-ivy. Native. Throughout. Very Common. 



Rhus typhina . Staghorn Sumac. Native or possible introduced from farther 

 east. Slopes, especially toward Lake. June-July. 



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