Acrocarpus fraxinifolius Wight & Arn.
  • Mag. Zool. Bot. 2: 547 (1839)
  • hon nak (หอนนาค)(Northeastern)

Cite taxon page as 'WFO (2023): Acrocarpus fraxinifolius Wight & Arn. Published on the Internet; Accessed on: 28 May 2023'

General Information

Trees, large, to 30 m tall before tree forks. Leaves 30-40 cm, lower leaves with 3-8 pairs of pinnae, leaves at apices of branches pinnate; rachis of leaves and of pinnae yellowish brown puberulent, glabrescent; leaflets 4-8 pairs, ovate or ovate-oblong, 7-13 × 4-7 cm, subleathery, lateral veins 8-12 pairs, base slightly oblique, broadly cuneate or rounded, margin entire, apex acuminate or acute. Racemes axillary, 20-25 cm, densely flowered; rachis pubescent at apex. Flowers erect at first, drooping later, scarlet, large. Pedicels 6-8 mm, pubescent. Petals lanceolate, ca. 2 × as long as and alternate with sepals, as receptacles and sepals yellowish brown puberulent. Stamens alternate with petals; filaments long, ca. 2 × as long as and much more exserted from corolla. Ovary long stalked, com­pressed. Legume purplish brown, flat, 8-15 × 1-2 cm, narrowly winged along ventral suture; wing 3-5 mm wide. Seeds 14-18, light brown. 2n = 24*.

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

    Por James L. Zarucchi

    Acrocarpus fraxinifolius Arn., Mag. Zool. Bot. 2: 547. 1838.

    Arboles de tamaño mediano a grande, ca 30 m de alto, inermes, frecuentemente fúlcreos en la base, corteza grisácea; ramas jóvenes con tomento aplicado, amarillento. Hojas 2-pinnadas, pinnas 3–5 pares, alternas a subopuestas; folíolos 4–9 pares por pinna, alternos a subopuestos, ovados a ovado-oblongos, 2–15 cm de largo y 2–7 cm de ancho, acuminados, algo oblicuos, pubescentes en el envés, glabrescentes, subsésiles; raquis 10–60 cm de largo, pubescente, subglabrescente, pecíolos 5–20 cm de largo, estípulas pequeñas, caducas. Inflorescencias racemosas, axilares y solitarias o 2–3 en los extremos de las ramas, un poco densas, generalmente 20–25 cm de largo, con la apariencia de un cepillo de botella, floreciendo antes del brote de las hojas, flores rojo brillantes, agrupadas a lo largo del eje, reflexas después de la antesis, pedicelo 6–8 mm de largo, receptáculo 6–8 mm de largo, pubescente; sépalos 5, 3–4 mm de largo, ápice redondeado, pubescentes; pétalos 5, subiguales, lineares, 6–10 mm de largo, cuneados; estambres 5, libres con filamentos conspicuos, cerca del doble de la longitud de los pétalos, anaranjado-amarillentos y basalmente verdes, gruesos, glabros; ovario libre, estipitado, con numerosos óvulos, estilo corto, estigma pequeño y terminal. Fruto comprimido, 8–15 cm de largo y 1–2 cm de ancho, con un ala angosta a lo largo de la sutura superior, 2-valvado, dehiscente, estipitado; semillas pocas a numerosas, comprimidas, café pálidas.

    Ampliamente cultivada en los trópicos y esperada en Nicaragua. Género con 2 especies nativas de Asia tropical.

  • Provided by: [D].Flora de Nicaragua
    • Source: [
    • 2
    • ]. 

    Tree up to 30 m high, often with buttresses; bark grayish; young shoots appressed yellowish tomentose. Leaves unpaired bipinnate. Petiole 5–20 cm; main rachis 10–60 cm long, pubescent when young later sub-glabrous. Pinnae 3–5 pairs. Leaflets 4–9 pairs, ovate to ovate-oblong, acuminate, slightly oblique, subsessile, when young pubescent beneath later glabrous, 2–15 by 2–7 cm. Racemes 1–3 together, dense, 20–25 cm. Pedicel 6–8 mm. Flowers reflxed after anthesis. Receptacle pubescent, 6–8 mm long. Sepals pubescent, 3–4 mm long with rounded apex. Petals red, linear-cuneate, 6–10 mm long. Filaments yellowish-orange with green base, glabrous, thick, twice the length of the petals. Ovary with 15–20 ovules. Pods long-stalked, 8–15 by 1–2 cm, flat, slightly torulose, with a 3–5 mm broad wing along the upper suture. Seeds pale brown, compressed.

  • Provided by: [B].e-Flora of Thailand
    • Source: [
    • 4
    • ]. 


    In evergreen gallery-forests up to 1100 m. Flowering Jan.–Febr. after shedding the leaves.

  • Provided by: [B].e-Flora of Thailand
    • Source: [
    • 4
    • ]. 


    Thailand, India (Sikkim, Assam), Burma (type). Laos, Sumatra, Java.

  • Provided by: [B].e-Flora of Thailand
    • Source: [
    • 4
    • ]. 


    Timber used for indoor construction and for plywood.

  • Provided by: [B].e-Flora of Thailand
    • Source: [
    • 4
    • ]. 

    Distribution Map

    • Introduced distribution
    Introduced into
    • Asia-Tropical Indo-China Thailand

    Other Local Names

    hon nak (หอนนาค)(Northeastern)ThaiTHA
    saeng talon (แสงตะล่อน)(Northeastern)ThaiTHA
    kuai ki (ก้วยกี่)(Northern-Karen)ThaiTHA
    sadao chang (สะเดาช้าง)(Southeastern)ThaiTHA
    kai (ไก่)(Northern)ThaiTHA
    kang khimot (กางขี้มอด)(Northern)ThaiTHA
    daeng ham (แดงน้ำ)(Northern)ThaiTHA
    khang chang (ขางช้าง)(Northern)ThaiTHA

     Information From

    e-Flora of Thailand
    Chayamarit, K. & Balslev, H. (eds.) (2019). Flora of Thailand. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
    • A All Rights Reserved
    • B Forest Herbarium All rights reserved
    World Flora Online Data. 2022.
    • C CC0 1.0 Universal (CC0 1.0).
    Flora de Nicaragua
    W. D. Stevens, C. Ulloa Ulloa, A. Pool & O. M. Montiel. 2001–. Flora de Nicaragua, Tropicos Project. Loaded from Tropicos Project: October 2017
    • D Missouri Botanical Garden
    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
    World Flora Online Consortium
    World Flora Online Data. 2017.
    • F CC0 1.0 Universal (CC0 1.0).
    Global Tree Search
    BGCI. 2022. GlobalTreeSearch online database (version 1.6). Botanic Gardens Conservation International. Richmond, UK. DOI: 10.13140/RG.2.2.34206.61761 Available at Accessed on (15/06/2022).
    • G Botanic Gardens Conservation International