IOWA ACADEMY OF SCIENCES. 
167 
Nagel and Haupt, Proc. Davenport Acad, of Nat. Sciences, 
Yol. 1, p. 168; Shimek, Bui. Lab. Nat. Hist., S. U. I., Yol. 8, 
p. 209; Pammel, Proc. Iowa Acad, of Sciences, Yol. 1, pt. 2, 
1890-1891, p. 91; Fitzpatrick, Proc. Iowa Acad, of Sciences, 
Yol. 5, p. 167; Iowa Geol. Sur., Yol. 8, p. 818; Macbride, 
Iowa, Geol. Sur., Yol. 7, p. 107; Britton and Brown, Ills. 
Flora, Yol. 1, p. 486; Barnes, Reppert, and Miller. Proc. 
Davenport Acad, of Nat. Sciences, Yol. 8, p. 255; Reppert, 
Iowa Geol. Sur., Yol. 9, p. 886. Trelease, Seventh Rep. 
Mo. Bot. Gar., p. 40. 
Hicoria alba (L.) Britton. White-heart Hickory. Mocker- 
nut. Tree growing about 80 feet high, bark not shaggy 
but rough and close; leaves and twigs persistently tomen- 
tose-pubescent, fragrant when crushed; leaflets 7-9, oblong- 
lanceolate or the upper oblanceolate or obovate, acuminate ; 
staminate aments in 8’s, peduncled ; middle lobe of the stami- 
nate calyx linear, much exceeding the lateral lobes; fruit 
nearly or quite globose; husk thick; nut grayish white, 
angled, pointed above, somewhat compressed, thick-shelled, 
4-celled below; seeds edible, sweet. Juglans alba L. Sp. 
PI. 997, 1758; Juglans tomentosa Lam. Encycl. 4 : 504, 1797; 
Car ija tomentosa Nutt. Gen. 2: 221, 1818; Hicoria alba Britton, 
Buli. Torr. Bot. Club, 15 : 288, 1888. 
The wood of this species has much the same character- 
istics and the same uses as the two preceding species. The 
species has an extensive range, being found from Massa- 
chusetts and Ontario to Nebraska, south to Florida and 
Texas. Its range in Iowa is quite limited and confined to 
the eastern side. Our specimens are from Muscatine 
county, where we found the species occupying rich up- 
lands, and it appeared to be the common species. The 
close, rough bark and tomentose leaves and twigs give the 
species an aspect quite distinct from any other hickory. 
All the trees which we noticed were small and seemed to 
be of second growth. We understand that the species 
occurs in Scott county, and Prof. Pammel has reported it 
from Johnson county. 
Arthur, Contr. to the Flora of Iowa, p. 29; Pammel, Proc. 
Iowa Acad, of Sciences, Yol. 1, pt. 2, 1890-1891, p. 91; 
