186 IOWA ACADEMY OF SCIENCES. 



Reppert, and Miller, Proc. Davenport Acad, of Nat. Sci- 

 ences, Vol. 8, p. 256; Sargent, Forest Trees of N. A., p. 141. 



Querais cwnnihidta (Mx.) Sarg, Chestnut or Yellow Oak. 

 A tree attaining large size; bark gray, flaky; leaves lance- 

 olate or oblong, acute or acuminate, equally and coarsely 

 toothed, slender-petioled, base obtuse or rounded, pale 

 beneath; acorn globose; cup hemispheric, thin, shallow^, 

 subsessile; scales ovate, appressed. Quercus pr'niKs arititii/i- 

 ata Mx., Hist. Chenes Am. No. 5, PI. S, 1801; Quercna mnhl- 

 enhergii Engelm., Trans. St. Louis Acad., Vol. 8, p. 891, 

 1877; Quercus acuiii'niafa Sarg., Gar. and For., Vol. 8, p. 98, 

 1895. 



This species is frequent in eastern and southern Iowa, 

 preferring rocky bluffs and bottoms. The wood is hard, 

 dense, close-grained, durable, and of much strength. The 

 specific gravity is the greatest of our species. This species 

 gives valuable timber, and has been much used until the 

 major portion of the large trees are all gone. Near Keo- 

 sauqua are quite a number of large trees still growing, and 

 Professor Pammel reports that fine, large trees are com- 

 mon in the valleys of Boone county. Our specimens are 

 from Johnson, Des Moines, Van Buren, Henry, Appanoose, 

 Decatur, Ringgold, and Fremont cjunties. We have 

 observed the species in Union, Adams, and Montgomery 

 counties. The State University herbarium has specimens 

 from Jackson, Delaware, and Lee counties. Professor Mac- 

 bride reports the species from Allamakee county; Profes- 

 sor Fink, from Fayette county; Messrs. Nagel and Haupt, 

 from Scott county; Mr. Reppert, from Muscatine county; 

 and Professor Pammel, from Boone and Clayton counties. 



Arthur, Contr. to the Flora of Iowa, p. 29; Hitchcock, 

 Trans. St. Louis Acad, of Science, Vol. 5, p. 518; Nagel and 

 Haupt, Proc. Davenport Acad, of Nat. Sciences, Vol. 1, 

 p. 168; Pammel, Proc. Iowa Acad, of Sciences, Vol. 1, pt. 

 2, 1890-1891, p. 91; Iowa Geol. Stir., Vol. 5, p. 288; Fink, 

 Proc. Iowa Acad, of Sciences, Vol. 4, p. 101; Fitzpatrick, 

 Proc. Iowa Acad, of Sciences, Vol. 5, p. 168; Vol. 6, 

 p. 196; Iowa Geol. Sur., Vol. 8, p. 814; Cameron, Iowa 

 Geol. Sur., Vol. 8, p. 198; Reppert, Iowa Geol. Sur., Vol. 9, 



