=Planèra aquática= (Walter) J. F. Gmelin. Planer-tree. Water Elm. This tree was included in Coulter's catalogue upon the authority of Sargent, who includes Indiana in the range of the species in his "Forest Trees of North America," Vol. 9, U.S. Census Report, 1880, page 124. Dr. Schneck spent a lifetime along the lower Wabash bottoms and very carefully preserved specimens of all the flora of the region where this species is reported to occur. In his report of the flora of this region in 1875 he does not include this tree. An examination of his herbarium material showed no specimens of this tree either from Indiana or Illinois. It is fair to presume if he had been acquainted with the tree he would have had it represented in his herbarium. Since the white elm is frequently called water elm, as well as the planer-tree, it is easy to understand how confusion might arise in separating these trees by non-professional people. =Morus nìgra= Linnæus. Black Mulberry. This species is reported by Phinney[87] as one of the "more important and common forest trees observed in Delaware County." He also enumerates _Morus rubra_. A splendid example of careless work. This species is reported by Brown[88] for Fountain County, and by McCaslin[89] for Jay County. These authors reported this species as a native forest tree. Since this species is not a native of the United States the citations no doubt should be referred to our native mulberry, _Morus rubra_ (red mulberry). =Ìlex opàca= Aiton. Holly. This species was included in Coulter's Catalogue of the Plants of Indiana on the authority of Robert Ridgway. I find no reference to this species in the writings of Ridgway. In Shawnee Park on the west side of Louisville, Kentucky is a large tree of this species. I was told that it was a native. A timber buyer of Tell City told me that there was a native tree on his grandfather's farm in the southern part of Perry County. Since this species has been reported for Grayson County, Kentucky, which is less than forty miles to the south, it is quite probable that a few trees were found as far north as Indiana. =Acer pennsylvánicum= Linnæus. Moosewood. The only record of this species occurring in Indiana is in a report of the Trees occurring along the Wabash River by Prince Maximilian. Since the report does not definitely state where the species was observed or how frequently it occurred and since the greater part of Maximilian's time was spent on the Illinois side of the Wabash, it is more than likely that he observed it on the Illinois side of the Wabash. While Indiana is within the possible range of the species, it has not been discovered since. If not extinct in our area it is most likely to be found among the hills of the southern counties or in the vicinity of Lake Michigan. Robert Ridgway says that he and Dr. Schneck saw it growing in a wooded cove near a cavern called Flory's Cave in Johnson County, Illinois.