Ailanthus altissima (Mill.) Swingle
  • J. Wash. Acad. Sci.
  • Götterbaum

Cite taxon page as 'WFO (2022): Ailanthus altissima (Mill.) Swingle. Published on the Internet; Accessed on: 29 Jan 2022'

General Information

Trees, deciduous, up to 20 m tall; bark smooth and straightly grained. Branches with pith, yellow or yellow-brown pubescent when young, then glabrescent. Leaves odd-pinnate, 40-60 cm; petiole 7-13 cm; leaflets 13-27, opposite or nearly so; blades ovate-lanceolate, abaxially dark green, adaxially gray-green, smelly when rubbed. Panicles 10-30 cm. Flowers light green; pedicel 1-2.5 mm. Sepals 5, imbricate, 0.5-1 mm. Petals 5, 2-2.5 mm, base hispid. Stamens 10; filaments densely hispid basally, longer than petals in males, shorter than petals in females; anthers oblong, ca. 1 mm. Carpels 5; styles connate; stigmas 5-lobed. Samarium oblong, 3-4.5 × 1-1.2 cm. Seed in middle of wing, flat-globose. Fl. Apr-May, fr. Aug-Oct.

  • Provided by: [E].Flora of China @
    • Source: [
    • 1
    • ]. 

    "Rapidly growing tree with few branches and coarse twigs; lvs large, to 1 m; lfls 11–41 (the terminal one often imperfectly developed or wanting), narrowly oblong, entire except for one or more coarse teeth near the base, each tooth with a large gland beneath; infl pyramidal, 1–3 dm; fls greenish or greenish-yellow, 5 mm wide; frs 3–5 cm × 7–13 mm, twisted; 2n=80. Native of e. Asia, often escaped from cult. in our range, especially in cities. (A. glandulosa)"

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

    A large polygamous tree, upto 30 m high or more. Leaves large, 30-40 cm or more long. Leaflets upto 12 cm long, 2.5-4 cm broad, alternate, ovate-lanceolate, usually cordate at base, glabrous except the veins and midrib near the base, with 2-4 coarse teeth, each with a large gland beneath, margin almost entire. Petiolules 2-10 mm long; midrib prominent. Inflorescence panicle, 10-30 cm long. Bracts minute. Flowers c. 7.0 mm across. Calyx 5-lobed, unequal, sepals much smaller than petals, c. 1 mm long and 0.5 mm broad, valvate, joined at the base, margin serrulate, glabrous, ovate, acuminate. Petals spreading, c.3 x 1.5 mm, glabrous, hairy at the base. Staminate flower with 10 stamens, filaments c. 3 mm long, arising from the base of small 10- lobed disc; anthers 2-celled, dehiscing longitudinally. Pistillate flower: ovary deeply divided, ovule solitary in each cell. Fruit samara, 3.5-5 cm long, twisted at the top, light reddish brown.

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


    Strauch oder bis 25 m hoher Baum. Blätter meist unpaarig gefiedert, 40–60(–90) cm lang, mit 4–12 Fiederpaaren. Teilblätter bis 10 cm lang, lanzettlich, zugespitzt, ganzrandig, am Grund oft asymmetrisch und mit einigen drüsigen Zähnen. Blü

  • Provided by: [A].Flora Helvetica – Illustrierte Flora der Schweiz
    • Tree or shrub, up to 25 m high; suckers profusely; dioecious. Stems with young branches reddish brown. Leaves imparipinnate; 300-600(-1000) mm long; petiolate; rachis erect, but leaflets tend to droop; leaflets ovate, apices acute to acuminate, margins toothed at base, each tooth with a sessile gland. Flowers: male flowers in axillary cymes on long pedicels, female flowers solitary on long pedicels; calyx 5-parted, sepals 5; petals 5, often very similar to sepals, elliptic, each with a fleshy gland at base, yellowish green; Sep.-Dec., Apr.-Jun. Fruit a samara.

    • Provided by: [D].e-Flora of South Africa
      • Source: [
      • 6
      • ]. 


      6–7. Als Parkbaum angepflanzt und besonders im Süden oft verwildert, kollin.

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


      Vredefort Dome Savanna; Dry Grassland; Mesic Grassland; Zastron Moist Grassland. Roadsides. Invader.

    • Provided by: [D].e-Flora of South Africa
      • Source: [
      • 6
      • ]. 


      Native to China.

    • Provided by: [D].e-Flora of South Africa
      • Source: [
      • 6
      • ]. 


      Other Local Names



       Information From

      Flora Helvetica – Illustrierte Flora der Schweiz
      Flora Helvetica – Illustrierte Flora der Schweiz, Konrad Lauber, Gerhart Wagner, Andreas Gygax. Haupt Verlag 2018.
      • A 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.
      • B 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.
      • C Missouri Botanical Garden
      e-Flora of South Africa
      e-Flora of South Africa. v1.21. 2018. South African National Biodiversity Institute.
      • D All Rights Reserved
      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.
      • E Missouri Botanical Garden
      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
      • G CC0 1.0 Universal (CC0 1.0).
      World Flora Online consortium
      World Flora Online Data. 2018.
      • H CC0 1.0 Universal (CC0 1.0).