416 TREES OF THE WABASH VALLEY— RIDGWAY. vol. xvii. 



The actual number of indigenous species of trees in the Lower Wa- 

 bash Vallej^ (from the mouth of White River southward) would thus 

 appear to be 107, but the total may be still larger through the probable 

 addition of Ilex opaca, quoted from southern Indiana, Cratmiiis arho- 

 rescens (Union and Jackson counties, III.), Hicoria myristicaformis 

 (Posey County, Ind.jjicle Prince von Wied), and a few of more general 

 distribution (as Ulmus racemosa) which have not yet been reported 

 from the area under consideration. 



B.— NUMBER OF SPECIES GROWING IN RESTRICTED AREAS. 



Some interesting additions, or additional observations, may be made 

 to the lists given on pages 50 to 53 of my catalogiTC. Regarding list 

 "(2)", for example (pp. 52, 53), it may be stated that the piece of woods 

 in question consisted wholly of low flat ground, much of it under water 

 in wet weather. Much valuable timber had been culled over the whole 

 area, while from considerable portions nearly all the large growth had 

 been destroyed, two species (the Western Catalpa and Black Walnut, 

 easily identified from the stumps) having in fact been quite extermi- 

 nated. If these latter had been still growing, the total number of 

 species growing on the 75 acres would apparently be 54, instead of 52, 

 as given in the list. A subsequent examination, however, revealed 

 the presence of two atlditional species, viz: Fraxinus qimdrangidata 

 (Blue Ash), and Hicoria microcarpa (Little Shellbark), making the 

 actual total 56 species. During a later examination (made in Octo- 

 ber, 18S2), which was restricted to 22 acres of the same piece of woods, 

 no less than 43 species of trees were detected, notwithstanding one 

 piece of S acres had been wholly deprived of the undergrowth and 

 most of the large trees, while more or less timber had been cut from 

 the whole tract. This gives about two additional species of trees 

 for each separate acre of the whole area. The species noted are the 

 following:: 



16. Fraxinus Americana. Common. 



17. Fraxinus quadravgidata. Common. 



18. Sassafras sassafras. Common. 



19. Ulmus Americana. Abundant. 



20. Uhnus jnihescens. Common, 



21. Celtis occidentalis. A few small trees. 



1. Liriodendron iuUpifera. Common. 



2. Asimina triloba. Common. 



3. Acer ruhrnm. Common. 



4. Acer saccharum. Conmion. 



5. Rhus copallina. Common, growing 



20 to 30 feet high. 



6. Glcdiisia iriacantlios. A few smnll 22. Moras rubra. Common. 



trees. 23. Platanus occidentalis. Common 



7. Gymnocladus dioicus. A few small 24. Hicoria ovaia. Abundant. 



trees. i 25. Hicoria microcarpa. Common. 



8. Cercis Canadensis. Common. 26. Hicoria sulcata. Common. 



9. Prunns Americana. Common. ' 27. Hicoria alba. Common. 



10. Prunus serotina. Rare. 



11. Liquidambar Styraciflua. Common. 



12. Corn Its florida. Common. 



13. Xyssa sylvatica. Common. 



14. Viburnum iwunifolium. Abundant. 



15. Diospyros Virginiana. Common. 



28. Hicoria glabra. Common. 



29. Hicoria minima. Common. 



30. Quercus alba. Abundant. 



31. Quercus platanoides. Common. 



32. Quercus macrocarpa. Rather common. 



33. Quercus coccinea. Common. 



