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The hickories generally thrive best in rich moist soil, but some, especially C. glabra, C. alba and C. ovata, grow equally well in drier localities. They are of rather slow growth, and difficult to transplant if taken from the woods; therefore the seeds are often planted where the trees are to stand, but if grown in the nursery and transplanted several times when young, trees 6-10 ft. high may be transplanted successfully.
The hickories generally thrive best in rich moist soil, but some, especially C. glabra, C. alba and C. ovata, grow equally well in drier localities. They are of rather slow growth, and difficult to transplant if taken from the woods; therefore the seeds are often planted where the trees are to stand, but if grown in the nursery and transplanted several times when young, trees 6-10 ft. high may be transplanted successfully.
Propagation is usually by seeds stratified and sown in spring in rows about 3 inches deep; named varieties may be grafted in spring in the greenhouse, on potted stock of C. cordiformis, which seems to be the best species for this purpose, veneer- or splice-grafting being usually employed; sometimes also increased by root-sprouts. For further horticultural advice, see Hickory-nut and Pecan.
Propagation is usually by seeds stratified and sown in spring in rows about 3 inches deep; named varieties may be grafted in spring in the greenhouse, on potted stock of C. cordiformis, which seems to be the best species for this purpose, veneer- or splice-grafting being usually employed; sometimes also increased by root-sprouts. For further horticultural advice, see Hickory-nut and Pecan.
C. arkansana, Sarg. Allied to C. glabra. Tree, to 70 ft.: bark dark gray, scaly: branchlets pubescent: lfts. 5-7, lanceolate, densely pubescent when unfolding, glabrous at maturity, 4-7 in. long: fr. ovoid or obovoid; husk usually splitting to the middle; nut slightly obovoid; shell very thick and hard; kernel sweet, small. Ark. and Okla. S.T.S. 2:181.—C. Buckleyi, Durand (C. texana, Buckl., not DC.). Allied to C. alba. Tree, to 50 ft., with dark, furrowed bark: lfts. 7, lanceolate or oblanceolate, pubescent on the veins below, 3-6 in. long: fr. subglobose or ovoid, 1½ in. across; husk thin, splitting to the base: nut reddish brown, veined; shell hard; kernel sweet. Texas to Okla. and Ark. S.T.S. 2:182.—C. carolinaeseptentrionalis, Engler & Graebn. (Hicoria carolinae-sep-tentrionalis, Ashe). Allied to C. ovata. Branchlets slender: lfts. 3-5, lanceolate, glabrous: fr. smaller; nut thin-shelled. N. C. to Ga. S.S. 14:720.—C. floridana, Sarg. Allied to C. cordiformis. Buds valvate, brownish yellow: lfts. usually 5, elliptic-oblong to lanceolate, densely scaly beneath, 2-3½ in. long: fr. obovoid, about 1 in. long, husk tardily splitting to the base; nut obovoid or subglobose. Fla. S.T.S. 2:177.—C. megacarpa, Sarg. Closely related to C. glabra. Bark close: buds larger: lfts. to 8 in. long: fr. broadly obovoid, to 1½ in. long; husk thick, tardily dehiscent to the middle; nut obovoid; kernel small, sweet. N.Y. to Mo. and Fla. S.T.S. 2:180.—C. mexicana, Engelm. Tree, with shaggy bark and tomentose-pubcscent lvs.: fr. depressed, with rather thick husk and broad, sharply 4-angled, white nut. Mex. The only species not native to the U. S.—C. texana, DC. (Hicoria texana, Le Conte). Similar to C. Pecan, but lfts. broader, less falcate, almost sessile: nut smaller, much darker, with somewhat rough surface; kernel bitter. Texas. S.S.14:719.—C. texana, Buckl.= C. Buckleyi. Alfred Rehder.
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