IOWA ACADEMY OF SCIENCES. 163 



p. 312; Fink, Proc. Iowa Acad, of Sciences, Vol. 4, p. 101; 

 Fitzpatrick, Proc. Iowa Acad, of Sciences, Vol. 5, p. 127 and 

 p. 163; Cameron, Iowa Geol. Sur., Vol. 8, p. 198; Macbride, 

 Iowa Geol. Sur., Vol. 4, p. 1 19; Vol. 7, p. 107; Vol. 10, p. 645; 

 Sargent, Forest Trees of N. A., p. 130; Barnes, Reppert, 

 and Miller, Proc. Davenport Acad, of Nat. Sciences, Vol.8, 

 p. 255; Reppert, Iowa Geol. Snr, Vol. 9, p. 386; Arthur, 

 Flora of Floyd county in History of Floyd county, p. 300; 

 Bot. Gazette, Vol. 7, p. 127; Gow, Proc. Iowa Acad, of Sci- 

 ences, Vol. 6, p. 60. 



Hicoy'ia pecan (Marsh.) Britton. Usually a slender tree, 

 60-100 feet or more high, bark somewhat rough, at length 

 shaggy; leaflets 11-13, oblong-lanceolate, short-stalked, 

 acuminate; staminate aments fascicled; middle lobe of the 

 staminate calyx linear, longer than the oblong lateral 

 lobes; fruit oblong-cylindrical; husk thin, 4-valved; nut 

 oblong-cylindrical, smooth, thin-shelled, 2-celled below; 

 seed edible. Jiiglans pecan Marsh. Arb. Am. 69, 1785; 

 Can/a olivaeformis Nutt. Gen. 2: 221, 1818; Hicoria pecan 

 Britton, Buh Torr. Bot. club, 15: 282, 1888. 



This hickory, commonly known as the pecan, occurs on 

 river bottoms and is infrequent or rare within our limits. 

 The wood of this species is heavy, hard, rather brittle, 

 close-grained, compact, and is reckoned of little value in 

 comparison with the wood of our other species. The nuts, 

 however, are sweet and edible and are an important article 

 of commerce, but Iowa affords very little, if any, of the 

 supply. Dr. White reported the species as belonging to the 

 flora of Iowa. 



Professor Pammel reported the species from Woodbury 

 county on the authority of Professor Hitchcock, also 

 from Muscatine and Scott counties; the latter locality on 

 the authority of Mr. Fluke. The State University herba- 

 rium has specimens from Muscatine and Louisa counties. 

 Outside of the above four mentioned counties the species 

 is not known to occur within our limits. 



White, Geol. Sur. of Iowa, Vol. 1, p. 138; Bessey, Contr. 

 to the Flora of Iowa, p. 119; Arthur, Contr. to the Flora 

 of Iowa, p. 29; Pammel, Proc. Iowa Academy of Sciences, 



