Ulmus americana

Ulmus americana subsp. var.

American Elm, White elm

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Ulmaceae >

Ulmus

americana

var.

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Standard Cyclopedia of Horticulture
Ulmus americana, Linn. (U. alba, Raf.). White Elm. Water Elm. American Elm. Figs. 3877, 3878, 3879. Tall and wide-spreading tree, attaining to 120 ft., usually with high light gray trunk, limbs gradually outward-curving with pendulous branches: branchlets pubescent when young, glabrous in fall: buds acutish, glabrous: lvs. ovate-oblong, unequal at the base, acuminate, doubly serrate, pubescent when young, at length glabrous and rough above, pubescent or almost glabrous beneath, 3-6 in. long: fls. in many-fld. clusters; stamens 7-8, exserted: fr. oval or elliptic, veined, deeply notched, incision reaching to the nutlet. Newfoundland to Fla., west to the base of the Rocky Mts. S.S. 7:311. Em. 2:322. G.F. 3:443, 467; 6:175. Mn. 7, p. 125; 8, p. 71. F.E. 15:86, pl. 46. F.S.R. l, p. 195. V. 14:79; 20:10. M.D.G. 1900:392-4.—One of the favorite avenue trees in the northeastern states. The elm varies considerably in habit, and the following forms have been distinguished. In the "vase form" the main trunk separates at 15-30 ft. into several almost equal branches, which diverge at first slightly and gradually, but at the height of 50-70 ft. sweep boldly outward and form a broad flat head, with the branches drooping at the extremities. This is the most beautiful and also the commonest form. The "plume form" is much like the foregoing, but the trunk is less divided and the limbs are clothed with short branchlets, thus forming feathery plumes. The "weeping-willow form" usually has a rather short trunk with limbs curving outward more rapidly and with long and very slender pendulous branches, forming usually a broad and round head. The "oak-tree form" is distinguished by its limbs spreading abruptly and in sharp turns and the branches being usually less pendulous. The name "feathery" or "fringed" elm is applied to trees which have the limbs and the main trunk clothed with short somewhat pendent branchlets thrown out usually in clusters at short intervals. This may appear in any of the forms named, but is most conspicuous in trees of the plume form. (Fig. 3879.) There are a few named varieties in nurseries: Var. aurea, Temple, with yellow foliage, found in Vt., by F. L. Temple; var. pendula, Ait., with slender pendulous branches; this is the "weeping-willow form" described above. ^CH The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.

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References

Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963

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