2i8 BOTANICAL GAZETTE [makch 



fruit varies as in the type from subglobose to obovoid, and there seems Httle 

 difference in the length of the pedicels, which are always longer than the 

 petioles. The leaves are usually glabrous, but on some of Bushes Missouri 

 specimens the midribs and veins are pilose on the lower surface and the petioles 

 are pubescent, as in the variety crassifolia (Monteer, nos. 548, 4725; Christian 

 County, no. 4664; Dumas, no. 5905). This variety is distributed from the 

 Province of Quebec to Iowa, Nebraska, North Dakota, and southwestern 

 Missouri, southwestern Oklahoma, New York, and Ohio, and to northwestern 

 Georgia (Cobb County, R. M. Harper, no. 166 in Herb. Gray). More distinct is 



Celtis occidentalis var. crassifolia Gray, Man. ed. 2, 397. 

 1856. — C. crassifolia Lamarck, Encycl. Meth. 4:138. 1797. — Differ- 

 ing from the type in its usually narrower, acuminate, thicker leaves, 

 often more coarsely serrate or nearly entire, scabrate on the upper 

 surface and pilose below along the midribs and veins. 



In this form the petioles are usually villose-pubescent, but occasionally 

 are quite glabrous; the pedicels are slightly villose, and the branchlets are 

 glabrous or pubescent. 



I have seen specimens of this variety from Viriginia and West Virginia; 

 North Carolina, A. Gray, Painted Rock, French Broad River, 1843 (in Herb. 

 Gray); river banks, Biltmore (ex herb. Biltmore no. 12 10, with nearly entire 

 leaves); Nashville, Tennessee; southern Indiana, wooded bluff of Blue River, 

 near Middletown, Crawford County, C. C. Deam, June 15, 1915 (no. 16423, 

 with coarsely serrate leaves, "a flat-topped shrub about 8 ft. high"), June 25, 

 1915 (no. 16418, the leaves entire or furnished with occasional teeth, "a shrub 

 8 ft. high in the dense shade of walnut and buckeye trees"); wooded bluff 

 of the Ohio River, 6 miles east of Cannelton, Perry County, C. C. Deam, 

 June 29, 191 5 (no. 16627, a tree 8 m. high with nearly entire leaves); southern 

 and western Illinois; Fort Snelling, Minnesota; northern and southern Mis- 

 souri; central Kansas; eastern and northwestern Oklahoma; Thomas County, 

 central Nebraska; Bigstone, eastern South Dakota; central North Dakota; 

 from the Tongue River Canyon, Big Horn Mountain, Wyoming; from the 

 Black Canyon of the Boise River and the valley of the Clearwater River, 

 Nez Perce County, Idaho; from Berlin, Dallas County, Alabama, R. S. Cocks, 

 1913 (with nearly entire leaves), and from Larissa, Cherokee County, B. F. 

 Bush, April 30, 1909 (no. 5561); and Livingston, Polk County, Texas, E. J. 

 Palmer, October 9, 1914 (no. 6785). 



Celtis Douglasii Planchon, Ann. Sci. Nat. III. 10:293. 1848; 

 Piper, Contrib. U.S. Nat. Herb. 2:221 (Fl. Washington). 1906; 

 Britton and Shafer, N. Am. Trees, 359. fig. 31Q. 1908.— C. relicu- 

 lata Howells, Fl. N.W. America 602 (not Torrey). 1897.— C. rugosa 



