168 • 
IOWA ACADEMY OF SCIENCES 
Barnes, Reppert, and Miller, Proc. Davenport Acad, of Nat. 
Sciences, Vol. 8, p. 255; Reppert, IowaGeol. Sur., Yol. 9, p. 
886; Trelease, Seventh Annual Rep. Mo. Bot. Gar., p. 89. 
Hicoria glabra (Mill.) Britton. Pig-nut Hickory. This 
species has been reported as occurring in Iowa by various 
authors, but its existence has not been confirmed by sub- 
sequent botanists and no specimens are at hand. .The fruit 
of the species is obovoid or ovoid-oblong, about two inches 
long or less; husk thin; valves tardily dehiscent; nut angled 
pointed, thin- shelled; seed not edible, bitter. Jug / arts 
glabra Mill. Gard. Diet. Ed. 8, No. 5, 1768; Cary a porcina 
Nutt. Gen. 4: 222, 1818; Hicoria glabra Britton, Bull. Torr. 
Bot. Club, I H 284, 1888. 
Messrs. Nagel and Haupt report the species from Scott 
county; Prof. Macbride from Allamakee and Johnson coun- 
ties; and Mr. Gow reports Cary a glabra Torrey (which is a 
synonym of the* above species) from Adair county, but 
probably Cary a amara Nutt. ( Hicoria minima (Marsh. )- 
Britton.) was intended. 
Nagel and Haupt, Proc. Davenport Acad, of Nat. Sciences, 
Yol. 1, p. 163; Macbride, Iowa Geol. Sur., Yol. 4, p. 119; 
Yol. 7, p. 107; Gow, Proc. Iowa Acad, of Sciences, Yol. 6, 
p. 62. 
HYBRIDS. 
Mr. Reppert, of Muscatine, has collected in Muscatine 
county certain forms of hickories that have been pub- 
lished as hybrids. One form was published by Professor 
Shimek in Bui. Lab. Nat. Hist., S. U. L, Yol. 3, p. 210, as 
Gary a sulcata X oliveeformis. ( Hicoria laciniosa X Hicoria 
pecan.) Professor Trelease in the Seventh Report Mo. 
Bot. Gard., p. 41, says that a supposed hybrid of Hicoria 
laciniosa and H. pecan was described by Mr. Fuller in the 
New York Weekly Tribune, July 9, 1892, as cultivated by 
Mr. R. M. Floyd, of Cedar Rapids, Iowa. Professor Tre- 
lease further considers (p. 39) certain forms contributed by 
Mr. Reppert and seems to consider them as hybrids of 
Hicoria alba and H. pecan ( C . tomentosa and C. olivce- 
f or mis), and on page 33 other forms as hybrids of Hicoria 
