66 



leaflets unsymmetrical at the base, sessile, those of the lowest pair 

 7-9 cm. long, and from 2.5-3 cm. wide. Sargent 1 says "this variety 

 occurs in Indiana," basing his authority upon my specimens of which 

 he has duplicates. Heimlich 2 reports this variety from White County, 

 and at the same time he reported the variety from Daviess, Martin and 

 Wells Counties, based upon specimens collected by the author and 

 determined by Sargent. I have carefully studied the specimens from 

 Daviess, Martin and Wells Counties, and they do not agree with 

 Sargent's description of the variety. While most of the leaves of the 

 specimens in question agree with the description, some do not, which 

 excludes it from the variety. 



3b. Carya ovata variety Nuttallii Sargent. Trees and Shrubs 

 2:207:1913. This variety is described as having "nut rounded, 

 obcordate or rarely pointed at apex, rounded or abruptly pointed 

 at the base, much compressed, prominently angled, about 1.5 

 cm. long and 1-1.2 cm. thick; the involucre 4-10 mm. thick, 

 splits freely to the base. Except in size of the fruit there appears 

 to be no character by which the variety can be distinguished from 

 the common Shagbark." Heimlich 3 reported this variety from Dekalb 

 County, based upon specimens collected by the author and determined 

 by Sargent. The nuts of the specimens from Dekalb County are 2 cm. 

 long. The author has specimens from Wells County that agree with 

 the description. 



4. Carya laciniosa (Michaux films) Loudon. Big Shellbark Hic- 

 kory. Plate 25. Large tall trees with trunks like those of the 

 shellbark hickory; bark of young trees tight, beginning to scale when the 

 trees reach a diameter of 1-2 dm., on older trees separating and scaling 

 off into long thin narrow strips ; twigs at the end of the season stout, 

 4-7 mm. thick near the tip, the twigs of the season hairy at first, becom- 

 ing glabrous or nearly so by the end of autumn, yellowish or late in 

 autumn a rusty brown, frequently retaining the leaf-stalks of the leaves 

 of the previous season until spring which is peculiar to this species; 

 terminal buds large, ovoid to ovoid-oblong, 10-25 mm. long; ordinary 

 leaves 3-5 dm. long; leaflets 5-9, prevailing number 7, ovate to oblong- 

 lanceolate or obovate, the largest 1-2 dm. long, velvety beneath when 

 they unfold and remaining hairy beneath until maturity, rarely nearly 

 glabrous; fruit ovate, subglobose, oblong or obovate, 3.5-7 cm. long; 

 dry husk 3.5-11 mm. thick; nut variable, generally much compressed, 

 up to 5.5 cm. long, usually circular in outline, but varying from ovate 

 to obovate and oblong, usually each side has 2 or 3 ridges which extend 



iBot. Gaz. Vol. 66:236:1918. 



2 Proc. Ina. Acad. Sci. 1917:435:1918. 



iProc. Ind. Acad. Sci. 1917:435:1918. 



