250 BOTANICAL GAZETTE [SEPTEMBER 
of the Edwards Plateau and as far south as the valley of the Atascosa River 
in Atascosa County, where it was first collected by BucKLry in June 1881. 
From farther northwest I have seen specimens only from Fredericksburg in 
Gillespie County. As in other species of the genus, there is considerable varia- 
tion in different individuals. The fruit is obovoid, rounded or gradually nar- 
rowed at the base or abruptly contracted into a more or less developed stipe, 
or ellipsoidal or ovoid and rounded at the ends; it varies from 2 cm. to 5 cm. 
in length and in diameter. The involucre varies from 2 mm. to 4 mm. in 
thickness, the largest fruit with the thickest involucre being found in southern 
Arkansas and western Louisiana, and the smallest in northern Missouri. The 
nuts are oblong to slightly obovoid, compressed and rounded at the ends and 
vary much in size but little in shape or in the thickness of the shell, which is 
unusually thick for a species of this group. The thickness of the branchlets, 
which are pubescent during the first year, and the size of the winter-buds 
vary on different trees. The leaflets as they unfold are covered above by 
small scattered yellow scales and on the lower surface are thickly clothed with 
thicker tawny scales mixed with silvery white scales, and are pubescent on the 
midribs and veins, traces of these fascicled hairs being persistent during the 
season. The scales and fascicled hairs are also found on the young petioles and 
rachis, which usually become quite glabrous before the end of the season. The 
yellow scales, sometimes mixed with short hairs, are more or less persistent 
on the fruit and on the winter-buds. 
CarYA BUCKLEYI var. ARKANSANA, f. pachylemma, n. f.— 
Differing from the var. arkansana in its larger fruit with a thicker 
involucre. The fruit of this form is 5-6 cm. long and 4-5 cm. in 
diameter with an involucre 1.2-1.3 cm. in thickness; the nut 
is rounded at the ends, slightly angled, compressed, from 3.2 to 
3-5 cm. long and about 3 cm. wide. 
A large tree with thick deeply fissured pale gray bark, small drooping 
unusually slender nearly glabrous branchlets and rusty pubescent winter-buds. 
Rich woods, Fulton, Hempstead County, Arkansas, E. J. Palmer, April 27; 
1914 (no 5396), October 19, 1914 (no. 6878), April ro en 12, 1915 (nos. 7172, 
7184), June 17, 1915 (no. 8032), October 18, 1915 (no. 89 
This tree, which in the size and thickness of the ean oeuduces remark- 
able fruit, long puzzled Mr. PAtMeR and me until the unfolding leaves showed 
its relationship with Carya Buckleyi. 
A hickory tree which is common and widely distributed in Mis- 
souri and northwestern Arkansas has the peculiar rusty brown 
pubescence of the Texas hickory on its young leaves and branchlets 
and on its winter-buds, and although the fruit is smaller this tree 
