1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus krausei Engl.

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


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

    General Description
    Tuber dirty pale yellowish, brownish, or orangish, yellow inside, globose, sometimes slightly subcylindric, with a deep central depression, 4–8cm high (or more), 5–25cm in diam., weighing up to 750g (?or more), seasonally developing several offsets; offsets rhizomatous, long and thin, 2–27 × 0.4–1cm, apically slightly thickened or not. Leaf solitary; cataphylls 3, to 25cm, proximally pale pink, distally grading into off-white, covered with pale blackish green, elongate spots; petiole background color pale green, at base often pale pink or with a reddish brown or reddish hue, with many smaller and larger, partly or nearly entirely confluent, elliptic to narrowly elliptic, blackish green or paler green or rarely reddish brown spots and several small, white dots, intensity of color and extension of pattern variable, 20–190cm, 1–5cm in diam. at base, glabrous; leaf blade 100–200cm in diam.; rachises broadly winged; leaflets paler green abaxially, green or grayish green adaxially, lanceolate to elliptic-lanceolate, more rarely elliptic, 11–48 × 2–11cm, base decurrent, apex acuminate. Inflorescence solitary; peduncle colored as petiole but smaller, 25–100cm, 0.8–2cm in diam. at base. Spathe erect, convolute at base, outside pale green, toward base slightly darker, inside pale yellowish green, base sometimes ± maroon, cymbiform, ovate to ovate-lanceolate, 11–40 × 6–26cm, basal convolute part 4–6cm, base inside with many small, slightly elongate or irregularly ridge-shaped warts, apex acute-acuminate. Spadix developing considerable heat at female anthesis and producing a heavy, gaseous, nauseating stench, yellowish white or pale green, nearly as long as spathe, rarely distinctly shorter or slightly longer, 8–35cm; flowers unisexual, naked; female zone cylindric or slightly obconic, 0.6–5cm, 0.6–2.3cm in diam. (including styles), flowers congested; ovary pale green, occasionally pale magenta-purple near style base, globose or slightly depressed, 1.5–2mm high, 2–2.5mm in diam., 1-loculed (rarely ?2-loculed), with 1 basal ovule; style green or magenta-purple, cylindric or conic, 1–2mm; stigma globose or semiglobose, ca. 1 mm in diam., entire or with a shallow central depression or shallowly 2- or 3-lobed; lobes pale yellowish white, yellow, or brownish, rounded, scabrous, margin sinuous; sterile zone between female and male zones rarely absent, cylindric, 0.6–2 × 0.8–1.8cm, staminodes congested; appendix fusiform or fusiform-conic, sometimes slightly laterally compressed, 3–17 × 0.9–5cm, sometimes with a small stipelike part, glabrous, apex rounded or ± acute, base occasionally stipelike, at base sometimes with a few rounded staminodes or staminodal remnants, separated by small grooves; staminodes often with a droplet as on connectives at female anthesis, ivory-white or creamy orange, occasionally flushed with pale purple, ovate or diamond-shaped in cross section, semiglobose, 1–4.5 × 1–3.1mm in cross section; male zone cylindric-fusiform or slightly obconic, sometimes slightly laterally compressed, 3.5–13 × 0.8–3cm, flowers congested; male flowers consisting of (1–)3 or 4(or 5) stamens, ivory-white; stamens 2–2.2mm high; filaments short, 0.75–1mm, thick, connate, in lowermost flowers greatly enlarged and with reduced thecae, grading into staminodes; anthers with a rounded apex or subtruncate, 1–1.3mm high, 1–1.75mm in diam.; pores apical, elongate; connectives often with a clear, slightly sticky droplet at female anthesis. Infructescence cylindric, ca. 10cm. Berries 1-seeded (rarely ?2-seeded), bright red, ca. 1cm. Seeds silvery gray with small, black dots, elliptic-ovoid, 6–9 × 3–5mm.

    Fl. Jun–Aug, fr. Nov–Dec.
    Shaded to open, often fire-prone, places in mixed primary evergreen/deciduous forests and deciduous dipterocarp forests, forest margins, bamboo thickets, on granite bedrock, sometimes near streams, lowlands.
    xi meng mo yu

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


    Known only from Jinping Xian, southern Yunnan, China, in secondary forest and shrubs in valleys, from 760 to 1820 m above sea level.

    General Description

    Tuberous herbs; tuber obovoid or depressed-obconical, ca. 14 x 12 cm, producing short globose offsets. Leaf unknown. Inflorescence long-pedunculate; peduncle ca. 56 x 1.5-2.3 cm, pale green with sparse (denser at base), blackish green, oblong, small spots, smooth; spathe erect, boat-shaped to ovate, ca. 20 x 15 cm; basal part dark purple, convolute, ca. 9.5 x 3(at base)-6 cm, slightly papillose; limb light green abaxially, green adaxially, deltoid, ca. 10 x 10 cm, the apex erect, acute. Spadix sessile, shorter than spathe, ca. 14 cm, emitting a faint, orange-like fragrance; female portion ca. 2.5 x 2 cm, the ovaries green, ovoid, ca. 2.5 mm diam., 2-ovulate; style pale green, ca. 1.5 mm, the stigma brown, slightly 3- or 4-lobed; sterile portion of spadix yellow, ca. 2 x 2.5 cm, the staminodes fusiform, ca. 6 x 5 mm; male portion of spadix yellow, ca. 3.5 cm x 2.2 mm, the synandria obconical, ca. 1 mm; anthers subglobose, short, pores apical; appendix of spadix deep yellow, cylindric, ca. 5.5 x 2.2 cm, the base rugulose, the apex acute, entirely papillose. Chromosome number: 2n = 26.



    Native to:

    Bangladesh, China South-Central, Laos, Myanmar, Thailand

    Amorphophallus krausei Engl. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1994 Kerr, A.F.G. [s.n.], Thailand K000291462 Unknown type material
    Jan 1, 1994 Mokim, S. [92], Myanmar K000291460
    Thailand 29047.794
    Thailand 46378.000
    Thailand 49719.000
    Thailand 49720.000
    Thailand 49722.000
    Mayo, S. [T5C], Thailand 29047.430
    Mayo, S. [Chiang Dao 1], Thailand 29047.443
    Mayo, S. [T26/2], Thailand 29047.445
    Mayo, S. [T26A], Thailand 46386.000
    Mayo, S. [T26/6 Chiang], Thailand 46550.000
    Mayo, S. [T26/11 Chian], Thailand 46553.000
    Mayo, S. [T26/9 Chiang], Thailand 46555.000
    Mayo, S. [T26/10 Chian], Thailand 46556.000
    Mayo, S. [T26/7 Chiang], Thailand 46558.000
    Mayo, S., Thailand 58930.000
    Mokim, S. [92], Myanmar K000291461 lectotype

    First published in Pflanzenr., IV, 23C: 94 (1911)

    Accepted by

    • Boyce, P.C., Sookchaloem, D., Hetterscheid, W.L.A., Gusman, G., Jacobsen, N., Idei, T. & Nguyen, V.D. (2012). Flora of Thailand 11(2): 101-325. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
    • 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.


    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis.


    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.

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

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. 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 2020. 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