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| Exposure: | ☼ | ?"?" is not in the list (sun, part-sun, shade, unknown) of allowed values for the "Exposure" property. |
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| Water: | ◍ | ?"?" is not in the list (wet, moist, moderate, dry, less when dormant) of allowed values for the "Water" property. |
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Acer > |
negundo > |
Read about Acer negundo in the Standard Cyclopedia of Horticulture
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Acer negundo, Linn. (Negundo fraxinifolium. Nutt. N. aceroides, Moench. Rulac Negundo, Hitchc.). Ash-leaved Maple. Box Elder. Fig. 101. Large tree, 70 ft.: lvs. pinnate; lfts. 3-5, ovate or oblong-lanceolate, coarsely serrate or 3-lobed, mostly glabrous, 2-5 in. long: fls. before the lvs.; staminate fls. in pendulous corymbs, pistillate fls. in pendulous racemes. E. N. Amer. S.S. 2:96. Michx. Hist. Arb. 2:18. H.T. 336.— Large, rapid-growing tree of spreading habit, thriving best in moist and rich soil. Much prized in the W., where it withstands cold and dryness. Largely used for shelter-belts and for planting timber-claims. Var. californicum, Sarg. (A. californicum, Dietr. Negundo californicum, Torr. & Gray). Branches pubescent when young: lfts. 3, of firmer texture, densely pubescent beneath: fr. not constricted at the base. W. N. Amor. S.S. 2:97. Nutt. N. Amer. Sylv. 2:72. Var. pseudo-californicum, Schwerin (A. californicum, Hort. A. Negundo var. californicum, Kirchn.). Branches green, bloomy; of vigorous growth. Var. violaceum, Kirchn. (A. californicum, Hort.). A vigorously growing form: branches purplish with glaucous bloom or finely pubescent when young. Var. argenteo-variegatum, Bonamy. Lvs. with broad white margin. Probably the most effective of all variegated hardy trees. F.S. 17:1781. Gn. 68, p. 402 (habit). G. 2:37; 11:97 (habit). Var. aureo-variegatum, Booth (var. aureo-maculatum, Schwerin). Lvs. spotted with yellow. Var. aureo-marginatum, Dieck. Lvs. with yellow margin. Var. auratum, Spaeth (var. californicum aureum, Hort.). Lvs. yellow. R.B. 1906:197. Var. crispum, G. Don. Lfts. curled. These horticultural varieties may be grafted on common box elder seedlings. Box elder also grows from hardwood cuttings, like the grape. Two new forms have been recently described as new species by Britton: A. interior, distributed from Alberta and Mont, to Ariz, and New Mex. (B.T. 655), and A. Klngii (B.T. 656), from Utah; they are closely allied to var. californicum, but differ in their glabrous foliage; in the first the wings of the samara are adnate to the nutlet only to or above the middle; in the second the wings reach the point of union of the nutlets.CH
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Cultivation
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Propagation
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Pests and diseases
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Cultivars
- 'Auratum' - yellowish leaves with smooth undersides
- 'Aureomarginatum' - creamy yellow leaf margins
- 'Baron' - Hardier & seedless variety
- 'Elegans' - distinctively convex leaves
- 'Flamingo' - pink and white variegation (very popular)
- 'Variegatum' - creamy white leaf margins
- 'Violaceum' - younger shoots and branches have blueish color
Subspecies
A. negundo is often discussed as being comprised of three subspecies, each of which was originally described as a separate species. These are:
- A. negundo subsp. negundo is the main variety and the type to which characteristics described in the article most universally apply. Its natural range is from the Atlantic Coast to the Rocky Mountains.[1]
- A. negundo subsp. interius has more leaf serration than the main species and a more matte leaf surface. As the name interus indicates, its natural range of Saskatchewan to New Mexico is sandwiched between that of the other two subspecies.[1]
- A. negundo subsp. californicum has larger leaves than the main species. Leaves also have a velvety texture which is essential to distinguish it from A. negundo subsp. negundo. It is found in parts of California and Arizona.[1]
Some authors further subdivide subsp. negundo into a number of regional varieties but these intergrade and their maintenance as distinct taxa is disputed by many. Even the differences between recognized subspecies are probably a matter of gradient speciation
Finally, note that a few botanists treat Boxelder Maple as its own distinct genus (Negundo aceroides) but this is not widely accepted.
Gallery
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References
- Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963
External links
- w:Acer negundo. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
- Acer negundo QR Code (Size 50, 100, 200, 500)