1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus konjac K.Koch

        This species is accepted, and its native range is China (Yunnan).

    [CATE]

    CATE Araceae, 17 Dec 2011. araceae.e-monocot.org

    General Description
    Tuber brown, slightly glossy, depressed globose, to ca. 20cm high, to ca. 30cm in diam., seasonally producing numerous long rhizomatous offsets with swollen apical part, these to ca. 50 × 3cm. Leaf solitary; petiole background color dirty whitish pinkish or dirty cream-colored, often nearly entirely covered by large, elongate, dark green confluent spots and smaller white dots, or with numerous small, blackish green spots, very variable, to ca. 100 × 8cm, glabrous or with scattered punctiform warts at base; leaf blade highly dissected, to ca. 200cm in diam., rachises narrowly winged; leaflets dull green adaxially, elliptic, 3–10 × 2–6cm, acuminate. Inflorescence long pedunculate (rarely short); peduncle colored as petiole, to ca. 110 × 5cm. Spathe outside base dirty pale brownish with blackish green spots, or dirty pale whitish grayish with a few scattered blackish green dots, near margin flushed with purple; inside base maroon with or without a paler whitish purplish zone above, elliptic-lanceolate to broadly ovate-triangular, 10–60 × 10–55cm, base and limb ± separated by a shallow constriction, margin ± strongly sinuous, apex acute; base within densely verrucate, verrucae tiny, punctiform; limb erect, outside uniformly dark purplish brown, or with scattered blackish green spots, inside uniformly dark brown, glossy, undulate and/or longitudinally folded, basal margin spreading. Spadix during female anthesis producing a strong smell of rotting meat and producing small, clear, slightly viscous droplets, sessile, 15–110cm; female zone cylindric or narrowly conic, 2–11cm, 1–4cm in diam. at base and to ca. 6 cm in diam. at apex, flowers congested or distant; ovary whitish or pale pinkish, apex purplish, depressed globose, oval or suborbicular in cross section, 2–2.5mm high, 2–4mm in diam., 2- or 3-loculed; style purplish, 1–5mm, ± slender, 0.7–1mm in diam., often distinctly branched at apex; stigma dirty yellowish brown, depressed, strongly undulate, often sunk between enlarged style branches, 2- or 3(or 4)-lobed, oval or triangular in cross section, ca. 0.5mm high, 1.5–2mm in diam., verruculose-scabrous; transitional zone between female and male zones occasionally with partly staminodal male flowers and/or pistillodial female flowers or flowers showing all intermediate stages; male zone cylindric, slightly fusiform, or slightly obconic, 2–12 × 1–6cm, flowers congested; male flowers consisting of 3–5 stamens; stamens 2–2.5mm; filaments pale orangish yellow or whitish, 0.5–1mm, basally or entirely connate or slightly diverging at apex; anthers dirty whitish grayish, or ± cream-colored, truncate or subtruncate, 1–1.5 × 0.8–2mm, rectangular in cross section; connective purplish, turning grayish at anthesis, slightly raised; pores apical, oval or reniform; appendix narrowly fusiform-conic, often laterally compressed and with irregular, shallow longitudinal furrows, 10–85 × 1.5–6cm, acute, dark purplish brown or paler, densely rugulose, base often with several diamond-shaped, flattened staminodes.
    Phenology
    Fl. Apr.
    Habitat
    Open situations or forest margins and thickets, secondary forests.
    Vernacular
    hua mo yu

    Images

    Distribution

    Native to:

    China South-Central

    Introduced into:

    China North-Central, China Southeast, East Himalaya, Korea, Nansei-shoto, Philippines, Thailand, Tibet, Vietnam

    Amorphophallus konjac K.Koch appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Mayo, A.K. [128] 29047.382
    Mayo, S. [625], China 29047.560
    Mayo [626], China 29047.671

    First published in Wochenschr. Gärtnerei Pflanzenk. 1(4): 262 (1858)

    Accepted by

    • Chang, C.S., Kim, H. & Chang, K.S. (2014). Provisional checklist of vascular plants for the Korea peninsula flora (KPF): 1-660. DESIGNPOST.
    • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis.
    • Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae (and Acoraceae): 1-560. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.

    Literature

    Kew Backbone Distributions
    • Chang, C.S., Kim, H. & Chang, K.S. (2014). Provisional checklist of vascular plants for the Korea peninsula flora (KPF): 1-660. DESIGNPOST.
    • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis.

    Sources

    CATE Araceae
    Haigh, A., Clark, B., Reynolds, L., Mayo, S.J., Croat, T.B., Lay, L., Boyce, P.C., Mora, M., Bogner, J., Sellaro, M., Wong, S.Y., Kostelac, C., Grayum, M.H., Keating, R.C., Ruckert, G., Naylor, M.F. and Hay, A., CATE Araceae, 17 Dec 2011.
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Science Photographs
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/