The published records are as follows: Gibson, Knox and Posey (Schneck); Knox (Thomas); Miami (Gorby).
Quercus prinoìdes Willdenow. Scrub or Dwarf Chestnut Oak. Reported for Marshall County by Nieuwland[86] on the authority of a specimen deposited in the National Museum collected by Clark. I had this reference checked by E. S. Steele and in a letter to me dated January 4, 1917, he says: "I find no specimen labeled Quercus prinoides, but there is one named Q. Prinus. There is no ground for calling it Q. prinoides." Since the specimen in question is a very immature one, I propose not to take it into consideration since the range of the species would be extended on a dubious specimen.
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.
Nyssa aquática Linnæus. Tupelo Gum. Several early authors erroneously reported Nyssa sylvatica as this species. This species inhabits deep swamps. Dr. Schneck and Robert Ridgway, recognized authorities and best acquainted with the swamp area of the southwestern counties, at first thought it was a member of our flora, but later decided that it should be excluded.
Michael Catt, 83 years old, who lived nearly 75 years about three miles west of Decker on the border of the cypress swamp in the south part of Knox County, told me that he is positive that the tupelo gum was an occasional tree in the cypress swamp west of Decker.
Fraxinus caroliniàna Miller. Water Ash. This species was included in Coulter's Catalogue of Indiana Plants upon the authority of Dr. Schneck. It is asserted that specimens were sent to Missouri Botanical Gardens for verification. The writer has carefully examined all the specimens of Fraxinus in the Missouri Botanical Gardens, and all of Schneck's specimens in the herbarium are now correctly named Fraxinus profunda. Since this species is not in our range it should be dropped from our flora.