FLOWERS--(a) _female_--occurring in 2 to several flowered spikes, with a one-celled ovary, about 1/4 to 1/3 inch long covered with tomentum; flowers rusty to yellowish green in color; stigma with two stigmatic lobes; bracts much longer than the lateral bractlets. (b) _male_--in three parted or branched aments, each flower usually containing 4 stamens with a 2 or a 3 lobed calyx; aments 3-4" long with glandular hairs. FRUIT--oval, globose or pear shaped, consisting of a woody husk 1/4 to 1/2" thick breaking usually along 4 lines of suture exposing a flattened nut generally 4 ridged, smooth or slightly roughened; usually white or cream in color, seed sweet with 2 cotyledons. RESULTS OF FIELD OBSERVATIONS BARK--Most of the shagbark hickory trees observed were found to have a smoke-gray, shaggy bark from 20 years of age to maturity. However, among the 158 individual hickory trees observed, there were found 7 trees which had a bark much more blackish than the normal shagbark type and with closely furrowed bark consisting of inter-lacing scaly ridges more similar in character to that of _Carya ovalis_ (Wangenh.) Sarg. The trees found growing under timberland conditions rather than as open field or hedgerow trees did not have the characteristic shaggy bark except for the upper trunk which had been exposed to the weather conditions of the forest canopy. Where the trunks of the trees were somewhat protected from direct rays of the sun and force of the wind, the bark was smooth, gray and but slightly plated with none of the shagginess typical of open field grown shagbark. BUDS AND TWIGS--The buds of shagbark were observed to divide themselves into two general groups based upon terminal bud shapes and two more groups based upon the sizes of the attenuated apex of the outermost bud scales. In all cases the bud scales were observed to be pubescent though the degree of pubescence varied considerably in the outer scales only. The two general bud shapes were globose-ovate and narrowly elliptical. The broadly oval (Fig. 1a) type of buds were smaller, generally under 1/2 inch in length while the elliptical (Fig. 1b) type of buds were usually over 1/2 inch in length. [Illustration: Fig. 1a Fig. 1b Shagbark Hickory Terminal Buds (1-X)] The long attenuated apex on the outer bud scales of the elliptical type of buds is evident in Figs. 1b and 2b. [Illustration: Fig. 2a Fig. 2b Shagbark Hickory Terminal Bud Scales (1-X)] The number of lateral buds at one position varied considerably with the usual number being one (Fig. 3a) bud located just above the lobed leaf scar. On exceedingly vigorous sprout growth, or on very vigorous terminal growth twigs, it was found that 2, 3, 4 and occasionally 5 superposed buds might occur (Fig. 3b).