IOWA ACADEMY OF SCIENCES 
183 
Geol. Sur., Yol. 8, p. 314; Grow, Proc. Iowa Acad, of Sci- 
ences, Yol. 6, p. 61; Pammel, Iowa Geol. Sur., Yol. 5, p. 
237; Iowa Geol. Sur., Yol. 9, p. 240; Yol. 10, p. 312; Came- 
ron, Iowa Geol. Sur., Yol. 8, p. 198; Macbride, Iowa Geol. 
Sur., Yol. 4, p. 119; Yol. 7, p. 107; Yol. 9, p. 153; Yol. 10, 
p. 647; Reppert, Iowa Geol. Sur., Yol. 9, p. 386; Barnes, 
Reppert, and Miller, Proc. Davenport Acad, of Nat. Sci- 
ences, Yol. 8, p. 256. 
Quercus minor (Marsh.) Sarg. Post or Iron Oak. Usually 
a small tree, with rough, gray bark, and broadly obovate, 
deeply lyrate-pinnatifid leaves which are dark green above 
and brown-tomentulose beneath; divisions 3 to 7, some- 
times undulate or toothed; fruit sessile or nearly so; cup 
hemispheric, bracts lanceolate, subacute, slightly squar- 
rose; acorn ovoid, two to three times the length of the cup. 
Quercus alba minor Marsh., Arb. Am. 120, 1785; Quercus 
stellata Wang., Amer. 78, PL 6, f. 15, 1787; Quercus obtusi- 
loba Mx., Hist. Chen. Am., 1 , Pi. 1, 1801; Quercus minor Sar- 
gent, Gard. and For. 2:471, 1889. 
The wood of this species is hard, close-grained, brown, 
and very durable. The specific gravity of this oak is 
greater than any other, save one of our species. The 
small trees make excellent posts for wire fences. The 
rarity of the species in Iowa prevents its use to even a 
limited extent. So far as we know, it is found in Iowa 
only in Appanoose county, where we have observed the 
species for several years. It grows in dry soil on the 
upland ridges, where it occurs in small groves. The species 
is found in Michigan on the north, and southwestward in 
Texas, and extends as far east as Massachusetts. Profes- 
sor Arthur includes the species in his catalogue under the 
name, Quercus obtusiloba Mx., but gives no locality. 
Arthur, Contr. to the Flora of Iowa, p. 29; Fitzpatrick, 
Proc. Iowa Acad, of Sciences, Yol. 5, p. 163. 
Quercus macrocarpa Mx., Hist. Chen. Am. 2, PI. 23, 1801. 
Mossy-cup or Bur Oak. Tree 100-150 feet or more in 
height; sometimes shrubby, with gray, flaky, deeply-fur- 
rowed bark, the twdgs rough or corky- winged; leaves 
