A number of species that are not now recognized have, at one time or another, been referred to the various beds within the John Day Basin. The reasons for excluding each are set forth in the following list:

Alnus corrallina Lesq., Cret. and Tert. Fl., p. 243, Pl. LI, figs. 1-3, 1883. The original of fig. 1 is said by Lesquereux to be from "John Day Valley, Oregon." This specimen is No. 1944 of the paleontological collection of the University of California, and is from south of Mount Diablo, California, agreeing with others from the same place, and being so marked on the back.

Betula elliptica Saporta. Lesq., Cret. and Tert. Fl., p. 242, Pl. LI, fig. 6, 1883. Said by Lesquereux to be from "John Day Valley, Oregon." It is No. 1760 of the paleontological collection of the University of California, and is from south of Mount Diablo, California.

Betula parce-dentata Lesq., Cret. and Tert. Fl., p. 242, Pl. L, fig. 12, 1883. Said by Lesquereux to be from "John Day Valley, Oregon." It is from south of Mount Diablo, California, and is No. 1955 of the paleontological collection of the University of California.

Berchemia multinervis (Al. Br.) Heer. Lesquereux, Proc. U. S. Nat. Mus., Vol. XI, p. 16, 1888. Not found in the collection of the United States National Museum. Omitted for lack of evidence.

Populus glandulifera Heer. Lesquereux, Proc. U. S. Nat. Mus., Vol. XI, p. 18, 1888. A single broken example that it is impossible to identify.

Quercus lonchitis Unger. Lesquereux, Proc. U. S. Nat. Mus., Vol. XI, p. 22, 1888. Much broken and impossible of identification.

Quercus fraxinifolia Lesq., op. cit., p. 22. Discarded for same reasons as the last.

Quercus Olafseni Heer. Lesquereux, op. cit., p. 22. Rejected for the same reason as the last two.

Juglans Leconteana Lesq., op. cit., p. 22. Same as the last.

Juglans denticulata Heer. Lesquereux, op. cit., p. 22. Could not be found in the collection of the United States National Museum.

Pteris elegans Newb., Proc. U. S. Nat. Mus., Vol. V, p. 503, 1883. Not recognized by its author in his Later Extinct Floras and specimens now lost, so far as known.