Acer negundo L.
  • Sp. Pl.
  • Acero americano

Cite taxon page as 'WFO (2021): Acer negundo L. Published on the Internet; Accessed on: 22 Oct 2021'

General Information

Trees to 20 m tall, dioecious. Bark yellowish brown or gray-brown. Branchlets glabrous, those of present year green, older ones yellowish brown; winter buds small, scales 2(or 3) pairs. Leaves deciduous; leaf blade 10-25 cm, papery, pinnate; petiolules 5-7 cm, pubescent, glabrescent; leaflets 3-7(-9) per petiole; leaflet blades ovate or elliptic-lanceolate, 8-10 × 2-4 cm, base rounded or truncate, margin entire or with 3-5 teeth, apex acute. Pistillate inflorescence pendulous, racemose or compound racemose, axillary from leafless buds, 15-50-flowered. Staminate inflorescence usually a cluster of 4 flowers. Flowers 4-merous. Petals and disk absent. Stamens purplish, 4-6. Ovary glabrous. Samaras brownish yellow; nutlets convex, glabrous; wing including nutlet 3-3.5 cm × 8-10 mm, wings spreading acutely or nearly erectly. Fl. Apr, fr. Sep. 2n = 26.

  • Provided by: [A].Flora Of CHina @
    • Source: [
    • 1
    • ]. 

    "Tree to 20 m, the trunk soon deliquescent; lfls 3–5 or on rapidly growing shoots to 9, pinnate, lanceolate to ovate or oblong, coarsely and irregularly serrate or with a few shallow lobes; dioecious; fls apetalous, appearing with or before the lvs, the staminate in sessile, umbel-like fascicles, drooping on slender pedicels, the pistillate in drooping racemes; disk wanting; mericarps 3–4.5 cm; 2n=26. Moist, especially alluvial soil; N.H. to Fla., w. to the Pacific, and irregularly in Mex. and Guat. Var. negundo, the common e. Amer. var., has glabrous, often glaucous twigs. (Negundo n.; N. nuttallii) Var. interius (Britton) Sarg. (Negundo i.), with velutinous twigs and usually with tufts of hairs in the vein-axils beneath, is chiefly western, occasionally extending to Minn. and Mo. Var. texanum Pax, with similarly hairy twigs, rather densely puberulent frs, and short-acuminate lfls pubescent over the whole lower surface, occurs chiefly from the Ozarks to Tex., extending e. to s. Ind."

  • Provided by: [C].New York Botanical Garden
    • Source: [
    • 2
    • ]. 

    Deciduous tree. Leaves pinnately compound, usually trifoliolate. Flowers apetalous, 4-merous.

  • Provided by: [D].Flora of Pakistan
    • Source: [
    • 3
    • ]. 


    Bis 20 m hoher Baum, oft mit hängenden Zweigen. Blätter unpaarig gefiedert, mit 3–7 Teilblättern, diese meist lanzettlich, unregelmässig gezähnt, 5–15 cm lang. Zweihäusig. Blüten ohne Krone, die männlichen auf langen, fadenförmigen, behaa

  • Provided by: [B].Flora Helvetica – Illustrierte Flora der Schweiz
    • Source: [
    • 4
    • ]. 


    4–5. Als Parkbaum angepflanzt und gelegentlich verwildert, kollin.

  • Provided by: [B].Flora Helvetica – Illustrierte Flora der Schweiz
    • Source: [
    • 4
    • ]. 


    Other Local Names

    Acero americanoItalianCH
    Erable à feuilles de frêneFrenchCH


     Information From

    Flora Of CHina @
    'Flora of China @ eFloras (2008). Published on the Internet [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
    • A Missouri Botanical Garden
    Flora Helvetica – Illustrierte Flora der Schweiz
    Flora Helvetica – Illustrierte Flora der Schweiz, Konrad Lauber, Gerhart Wagner, Andreas Gygax. Haupt Verlag 2018.
    • B All Rights Reserved
    New York Botanical Garden
    Descriptions of plants should be attributed to the full citation for each individual article, chapter or book that is the source for each record, which should include the authors of original publication.
    • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
    Flora of Pakistan
    Flora of Pakistan. Missouri Botanical Garden. Accessed on Jun. 2020.
    • D Missouri Botanical Garden
    International Union for Conservation of Nature v.3
    IUCN 2019. The IUCN Red List of Threatened Species. Version 2019-1.
    • E See IUCN Terms and conditions of use
    Global Tree Search
    BGCI. 2018. GlobalTreeSearch online database. Botanic Gardens Conservation International. Richmond, U.K. Available at Accessed on 30/11/2018.
    • F Botanic Gardens Conservation International
    International Union for Conservation of Nature
    IUCN 2016. IUCN Red List of Threatened Species. Version 2016-2
    • G All Rights Reserved
    • H CC0 1.0 Universal (CC0 1.0).
    World Flora Online consortium
    World Flora Online Data. 2018.
    • I CC0 1.0 Universal (CC0 1.0).