246 BOTANICAL GAZETTE [SEPTEMBER 
CARYA OVALIS var. OBCORDATA, f. vestita, n. f—Differing from 
the var. obcordaia in the thick tomentose covering of the branchlets 
during their first year. The leaflets of this form are slightly pubes- 
cent in the autumn on the under surface of the midribs. Although 
the nuts are more compressed than those of the ordinary forms of 
var. obcordata, the fruit is of that variety. The branchlets are 
unusually stout for a form of C. ovalis and are covered with rusty 
tomentum during their first year and are more or less pubescent in 
their second and third seasons. 
A large tree on the low border of Davis Pond 14.3 miles southwest of 
Decker, Knox County, Indiana, C. C. Deam, October 5, 1917 (no. 24, 144 type). 
CARYA OVALIS var. OpoRATA Sargent, /.c. 1913.—The fruit of 
this form shows less tendency to vary than that of the other forms 
and is subglobose or slightly longer than broad, much flattened and 
1.3-1.5 cm. in diameter, with an involucre often not more than 
1mm. thick. The bark of old trees is often scaly. 
This form is not common, but ranges from southern New England, eastern 
Pennsylvania, and the District of Columbia to western New York, Ohio, 
Indiana, southeastern Ontario, and southern Illinois. From the southern 
states I have seen specimens only from the neighborhood of Atlanta, Georgia, 
and from Starkville, Oktibbeha County, Missisisppi. 
CARYA OVALIS var. BOREALIS Sargent, /.c. 1913.—This variety 
differs from C. ovalis in its pubescent branchlets and winter-buds 
and in the pubescence on the leaves early in the season. It has 
ellipsoidal or ovoid flattened fruit with an involucre 3-3.5 mm. 
thick and an ovoid nut conspicuously ridged to the base. The bark 
is scaly. 
This variety has only been noticed in southwestern Michigan. 
CARYA OVALIS var. OBOVALIS Sargent, I.c. 1913.—This form has 
more or less obovoid fruit about 2.5 cm. long and 2 cm. in diameter. 
The fruit resembles in shape that of Carya glabra, but the involucre 
is thicker and splits easily to the base or nearly to the base. 
This form is found from southern New England to Missouri and northern 
Arkansas, and occurs on the mountains of North Carolina, on the coast of 
Georgia, and in northern central Alabama, and is the common “pignut” in the 
middle western states. 
