PROCEEDINGS OF THE NATIONAL MUSEUM. 



417 



41. PopiiJus heieroplujlla. Abundaut 



along edge of swamp. 



42. Popuhts monilifera. Common along 



edge of swamp. 



43. Popiihis (jrandidcntata. Sparingly- 



scattered through woods. 



34. Quercus velutina. Common. 



35. Quercus rubra. Common. 



36. Quercus pahisfris. Common. 



37. Quercus hnhricaria. Common. 



38. Fagus atropunicea. Common. 



39. Carpinus J'irginiana. Common. 



40. Salix nigra. Most abundaut tree 



along edge of swamp. 



On a tract of 40 acres, partly cleared, 1 mile southeast of Olney, 

 Richland County, 111., the following species were recognized during an 

 imperfect survey of the woods : 



21. Hicoria orata. Common. 



22. Hicoria minima. Common. 



23. Hicoria glabra. Common. 



24. Hicoria alba. Abundaut. 



25. Quercus alba. Abundant. 



26. Quercus platanoides. Ratht-r common. 



27. Quercus minor. Common on high 

 grounds with thin soil. 



28. Quercus macrocarpa. Connncm. 



29. Quercus coccinea. Common. 



30. Quercus rehitina. Common. 



31. Quercus rubra. Common. 



32. Quercusjialustris. Common. 



33. Quercus imbricaria. Abundant. 



34. BetuJa nigra. Rather common along 

 bank of stream. 



35. Salix nigra. Rather connnon in wet 

 places. 



36. Populus monilifera. Rather common 

 along bank of stream. 



1. Asimina triloba. Common. 



2. Acer saccharinum. Common. 



3. Acer rubrum. Rare? 



4. Acer saccharum. Common. 



5. Glediisia triacanthos. Common. 



6. Cercis Canadensis. Abundant. 



7. Prunus Americana. Common. 



8. Prunus serotina. Common. 



9. Pyrus coronaria. Connnon. 



10. Corn us jiorida. Abundant. 



11. Nyssa sylvaiica. Common. 



12. Diospyros Virginiana. Common. 



13. Fraxinus quadrangulata. Common. 



14. Caialpa speciosa. Common. 



15. Sassafras sassafras. Common. 



16. Ulmus Americana. Common. 



17. Ulmus pubescens. Common. 



18. Morns rubra. Rather common. 



19. Platanus occidentalis. Common. 



20. Juglans nigra. Common. 



For the sake of comparison of variety of tree-growth between the 

 foregoing Mississippi Valley localities and localities of equal or greater 

 area east of the Alleghanies, in the same latitude, the following lists 

 are presented : 



(1) Near Falls Church, Fairfax County, T'a.; locality, a SOO-acre farm and vicinity. 



Liriodendron tulipifera. Common. 



Ilex opaca. Rare. 



Acer rubrum. Common. 



Robinia pseudacacia. Abundant, but 

 perhaps spread from cultivation. 



Prunus serotina. Rather common. 



Cornus jiorida. Abundant. 



Nyssa sylvaiica. Rather common. 



Diospyros Virginiana. Common. 



Chionanthus Virginica. Rather com- 

 mon. 



Fraxinus {Americana?). Rare. 



Sassafras sassafras. Abundaut. 



Ulmus Americana. Rare. 



13. Juglans nigra. Very rare. 



14. Hicoria alba. Rather common. 



15. Quercus alba. Abundaut. 



16. Quercusplatanoides. Common on low 



grounds. 

 *17. Quercus prinus. Abundant on high 



grounds. 

 *18. Quercus Phellos. Common on low 



grounds. 



19. Quercus nigra. Common on high 



grounds. 



20. Quercus digitata. Common on high 



grounds. 



21. Quercus rubra. Rather common. 



Proc. :N. M. 94- 



.97 



