244 BOTANICAL GAZETTE [SEPTEMBER 
Gleason in Herb. Gray). MIcHAvux’s figure on which Sweet based his Carya 
glabra represents a rather longer fruit than that of the common form of this 
tree and the involucre has opened by 4 sutures nearly to the middle of the 
fruit. Carya glabra passes into 
CARYA GLABRA var. megacarpa, nov. comb.—Carya megacarpa 
Sargent, Trees and Shrubs 2: 201. pl. 180. 1913; Carya ovalis var. 
megacarpa Ashe, Torreya 18:74. 1918.—Differing from the type in 
its larger fruit with a thicker involucre and in its usually stouter 
branchlets and larger winter-buds. 
This tree has larger fruit with a thicker involucre, usually stouter branches, 
larger buds, and close bark which shows little tendency to become flaky. The 
thickness of the branchlets, the size of the buds, and the size of the fruit, how- 
5-7-foliate. 
In the north this form has been seen only near Rochester, New York, on 
the New Jersey Coast, in the District of Columbia, and in southern Illinois; it 
is one of the most abundant hickories in the coast region of the southeastern 
States from North Carolina to the Florida peninsula, and to Alabama, where 
it is a common tree on the shores of Mobile Bay, and Louisiana. It ranges 
occasionally inland to central and northern Georgia and to western Mississipp!. 
CARYA GLABRA var. MEGACARPA f. angulata, n. f.—Differing from 
the type in the striately angled nuts. The fruit of this form is 
broadly obovoid, depressed at apex, 2.5-3 cm. long, 2.8-3 cm. 
wide, and about 2. 5 cm. thick; the involucre is 3-4 mm. in thick- 
ness and remains closed after the fruit is perfectly dry. The nut is 
