168 IOWA ACADEMY OF SCIENCES 



Barnes, Reppert, and Miller, Proc. Davenport Acad, of Nat. 

 Sciences, Vol. 8, p. 255; Reppert, lowaGeol. Sur., Vol. 9, p. 

 386; Trelease, Seventh Annual Rep. Mo. Bot. Gar., p. 39. 



HIcorin (jldhra (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. Jngians 

 glabra Mill. Gard. Diet. Ed. 8, No. 5, 1768; Can/a porcina 

 Nutt. Gen. i- 222, 1818; Hicoria (jlahra Britton, Bull. Torr. 

 Bot. Club, |-»: 284, 1888. 



Messrs. Nagel and Haupt report the species from Scott 

 county; Prof. Macbride from Allamakee and Johnson coun- 

 ties; and Mr. Gow reports Canja glabra Torrey (which is a 

 synonym of the above species) from Adair county, but 

 probably Cari/a aniara Nutt. [Iliroria ui'ui'nna (Marsh. )- 

 Britton.) was intended. 



Nagel and Haupt, Proc. Davenport Acad, of Nat. Sciences, 

 Vol. 1, p. 163; Macbride, Iowa Geol. Sur., Vol. 4, p. 119; 

 Vol. 7, p. 107; Gow, Proc. Iowa Acad, of Sciences, Vol. 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. I., Vol. 3, p. 210, as 

 Carya sulcata X olivwformis. {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- 

 formis), and on page 33 other forms as hybrids of Hicoria 



