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. Sur., 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. 
Hicoria 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. Jug Ians pecan Marsh. Arb. Am. 69, 1785; 
Cary a olivaeformis Nutt. Gen. 2 ■ 221, 1818; Hicoria pecan 
Britton, Bui. 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, 
