209 



Pyrus ioensis (Wood) Bailey 



(Mains ioensis Britt.) 

 Pyrns soidardi Bailey 



(Mains sonlardi Britt.) 

 Amelanchier canadensis (Linn.) Medic. 



Crataegus crns-galli Linn, 



Crataegus coccinea Linn. 



Crataegus tomentosa Linn. 



Crataegus cordata (lAWX.) Ait. 



Crataegus viridis Linn. 



Crataegus macracantha (Lindl.) Lodd. 



Crataegus mollis (T. & G.) Scheele 



Crataegus punctata Jacq. 



Crataegus spp. (Various other species 



of minor importance) 

 Prunus nigra Ait. 

 Prunus hortidana Bailey 

 Prunus angustifolia Marsh. 



(Prunus chicasa Michx. ) 

 Prunus pennsylvanica Linn, f . 

 Prunus virginiana Linn. 



(Prunus demissa Walp.) 

 Primus serotina Ehrh. 

 Cercis canadensis Linn. 

 Gleditsia triacanthos Linn. 

 Gleditsia aquatica Marsh. 



(Gleditsia monosperma Walt.) 

 Gymnocladus dioica (Linn.) Koch 



(Gymnocladus canadensis Lam.) 

 Robinia pseudacacia Linn. 

 Xanthoxylum clava-herculis Linn. 

 Ptelea trifoliata Linn. 

 Ailanthus glandulosa Desf. 



Rhus hirt a CL'mn.) Sudw. 



(Rhus typhina Linn.) 

 Rhus copalina Linn. 

 Rhus vernix Linn. 



(Rhus venenata DC.) 



Iowa crab 

 Soulard crab 



Serviceberry. June berry. 

 Shadbush 



Cockspur. Red haw. Cock- 

 spur haw 



Scarlet haw. Red haw. 

 White haw 



Pear haw. Blackthorn. Haw- 

 thorn. Thorn apple 



Washington haw 



Green haw 



Longspine haw 



Downy haw 



Dotted haw 



Canada plum 

 Wild garden plum 

 Chickasaw plum. (Probably 



naturalized) 

 Wild red cherry 

 Choke cherry 



Black cherry. Wild cherry 

 Redbud. Judas tree 

 Honey locust 

 Water locust 



Coffeetree. Coffeebean. Ken- 

 tucky coffeetree 



Locust. Black locust 



Prickly ash 



Hoptree. Whahoo. 



Ailanthus. Tree of Heaven. 

 (Ex cult, escaped) 



Staghorn sumach. Sumac 



Dwarf sumach 

 Poison sumach 



