Carya Juglandaceae 369 



This species prefers a moist soil but will be found also on wooded slopes. 



The species is variable in the number and size of its leaflets. The usual 

 number of leaflets is 5 or 7, but trees with 7 or 9 leaflets are frequent. The 

 leaflets of the greater number of trees rarely exceed 3.5 cm in width but 

 the lateral leaflets of some trees are more than twice as wide. Sargent calls 

 the wide-leaflet form var. latifolia Sarg. He says the under surface of 

 the leaflet is usually more pubescent. This is usually true but can not be 

 used as a character to separate the two forms. In Indiana, the forms with 

 wide leaflets are found in the southern half of the state, especially on the 

 wooded slopes of the hill country. 



Valley of the St. Lawrence River to Nebr., southw. to the Gulf States. 



3. Carya ovata (Mill.) K. Koch. (Hicoria ovata (Mill.) Britt.) Shag- 

 bark Hickory. Map 760. Infrequent to common in every county of the 

 state. Its habitat is moist, rich woodland but it is sometimes found on 

 slopes of hills. It is usually associated with red oak, bigleaf shagbark 

 hickory, swamp white oak, basswood, white ash, slippery elm, sugar maple, 

 beech, and sweet gum. 



N. E., Ont. to Minn., southw. to Fla. and Tex. 



3a. Carya ovata var. fraxinifolia Sarg. (Sargent. Trees and Shrubs 2: 

 207. 1913.) This variety is described as "having leaflets lanceolate to 

 slightly oblanceolate, acuminate, thick and firm in texture, lustrous above, 

 pubescent along the midribs below, the terminal 1.4-1.5 dm long, from 

 4.4-5 cm wide, and raised on a slender puberulous petiolule, the lateral 

 leaflets asymmetric at the base, sessile, those of the lowest pair 7-9 cm long, 

 and 2.5-3 cm wide." Sargent referred specimens which I had collected from 

 Daviess, Martin, and Wells Counties to this variety. 



3b. Carya ovata var. Nuttalli Sarg. (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; 

 involucre 4-10 mm thick and splitting 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." This variety is more or less 

 frequent in the northeastern part of the state. 



4. Carya laciniosa (Michx. f.) Loud. (Hicoria laciniosa (Michx. f.) 

 Sarg.) Bigleaf Shagbark Hickory. Map 761. Rare, infrequent or fre- 

 quent to common throughout the state, although there are no specimens 

 or records from the northwestern counties. I was told that it occurred in 

 the northern part of Porter County. It may be absent from a few of these 

 counties. This species grows in wet woodland and is usually associated 

 with the shagbark hickory. Locally it is common and throughout the Lower 

 Wabash Valley it is common. It is associated with many species that 

 inhabit wet woods and in one locality in the Spencer County Bottoms 

 southwest of Rockport I found this species and beech the dominant trees. 



Exception : In the Lower Wabash Bottoms, there is a form of this hickory 



