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This resembles very nearly our common Elm in appearance, and being perfectly hardy is to be recommended for planting in this country. Zelkova Tree. Western Asia to Mount Caucasus, 1760. This is a handsome, large growing tree, with oblong deeply-crenated leaves, and small and inconspicuous flowers.
Until recently they were considered to belong to the genus Planera, which, however, consists of but a single New World species; now, they properly constitute a distinct genus, viz., Zelkova, which differs materially from the true Planer tree in the structure of the fruit, etc.
This work contains transverse and longitudinal sections of one hundred Japanese woods, and numbers 45 and 46 represent Z. acuminata. It would be worth the while of those who are interested in the introduction and cultivation of timber trees in temperate climates to procure Kinch's handbook. IDENTIFICATION. Zelkova acuminata, D.C. Prodr., xvii., 166; Z. Keaki, Maxim. Mel. biol. vol. ix, p. 21.
The ovate crenate leaves, which measure from an inch or even less, to one inch and a half in length by about half the length in breadth, are leathery, dark green above, grayish above. They are hairy on both surfaces, the underside being most densely clothed, and the twigs, too, are thickly covered with short grayish hairs. IDENTIFICATION. Zelkova cretica. Spach in Suit a Buff, ii, p. 121.
Woodbridge, are: Height, 76 feet; girth of trunk at 21/2 feet from ground, 10 feet; spread of branches, 36 feet. IDENTIFICATION. Zelkova crenata, Spach in Ann. des Sc. nat. 2d ser. 15, p. 358. D. C. Prodromus, xvii., 165 Rhamnus ulmoides, Gueldenst. It., p. 313. R carpinifolius, Pall. Fl Rossica, 2 p. 24, tab. 10. Ulmus polygama, L C. Richard in Mem. Acad. des Sciences de Paris, ann. 1781.
I suspect that the Zelkova crenata var. repens of M. Lavallee's "Aboretum Segrezianum" and the Planera repens of foreign catalogues generally are identical with the variety now mentioned under the name it bears in the establishment of Messrs. Lee & Son. Z. acuminata is one of the most useful and valuable of Japanese timber trees. It was found near Yeddo by the late Mr.
I have seen no specimens of the Zelkova stipulacea of Franchet and Savatier's "Enumeratio Plantarum Japonicarum," vol. ii., p. 489, and as that seems to have been described from somewhat insufficient material, and, moreover, does not appear to be in cultivation, I passed it over as a doubtful plant. Royal Gardens, Kew. Prof.
They particularly mention its suitability for roadside avenues, and affirm that its leaves are never devoured by caterpillars, and that the stems are not subject, to the canker which frequently ruins the elm. The name Orme de Siberie, which is or was commonly applied to Zelkova crenata in French books and gardens, is doubly wrong, for the tree is neither an elm nor is it native of Siberia.
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