1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus macrorhizus Craib

        This species is accepted, and its native range is N. Thailand.

    [CATE]

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

    Distribution

    Thailand. Endemic.

    General Description

    Tuber napiform, 10-35 x 1.5-6 cm, unbranched or with few branches in lower part,. Leaf solitary; petiole 40–110 × 1–2 cm, turgid, densely, velvety hairy, or epidermal cells less conspicuously elongate; colour pattern very variable, from almost entirely pale green with a few elongate or long-linear, whitish spots, to reddish brown with many blackish green, large confluent spots, sometimes almost entirely covering the petiole, many intermediate patterns exist often suffused with reddish shades; leaf blade moderately strong divided, to 110 cm diam., rachises winged except for the lowermost parts; ultimate segments elliptic to obovate, shortly acuminate to apiculate, 10–36 × 5–16 cm, adaxially dark, velvety green with a narrow reddish purplish margin, smooth, abaxially greyish green, hairy like petiole. Inflorescence solitary, long pedunculate; peduncle appearance as petiole, 22–125 cm × 7–20 mm; spathe erect, deeply cymbiform, lower part transversely oval, limb triangular, 9–25 × 3–20 cm, base convolute or nearly entirely open, grading into the limb or slightly constricted at the apex, lower margins of the limb often strongly recurved, exterior pale green with some small, darker green spots at the base, or with small, whitish spots all over, the margin often suffused with a purplish hue, apex dark green, interior pale green with or without a purplish margin and sometimes with indistinct small whitish spots all over, base green or dirty maroon chequered with pale green or entirely pale maroon, the latter colour sometimes extending over nearly the entire spathe, veins at the base impressed, groove-like, in between with very tiny, punctiform warts; spadix sessile or very shortly stipitate, slightly to distinctly longer than spathe, 11–30 cm long; pistillate flower zone cylindrical or slightly conical, 1.8–5 cm × 8–20 mm, flowers congested, rarely a small naked zone at the apex or a small zone with flask-shaped pistillodes; ovaries depressed, prismatic or diamond-shaped, entirely bright pale green or with a blackish purple apex, 2–3 × 1.5–1.75 mm; style absent or very short, apex dichotomous, to 1.5 × 1–1.2 mm, purplish; stigma 2–3–(4-)lobed, oval in outline, lobes conical, separated by a transverse or Y-shaped groove, surface minutely verrucate, or strongly penicillate, greyish or pale yellowish brown, 1 × 1–1.75 mm; staminate flower zone fusiform-conical, 4–11.5 cm × 9–30 mm, apex truncate, base more or less obtuse but sometimes irregularly extending into the pistillate flower zone, flowers congested; staminate flowers 3–6-androus; stamens 3–4 mm high; filaments fused into a thick column, 2–3 × 2 mm, in the lowermost flowers enlarged (to 5 mm long) and strongly obconical, off-white, the apex dirty purplish; appendix elongate fusiform, subulate, sometimes very feeble, often dorso-ventrally compressed and slightly sinuous, 5–21 cm × 6–18 mm, the base sometimes slightly attenuate and often with several, scattered, flexuous, ca 1–3 mm long, thin, purple-brown hairs, otherwise smooth, dirty (yellowish) green, blackish brown or lead-grey, the very base often white and sometimes more or less stipe-like. Infructescence long-pedunculate, with persistent spathe-base, cylindrical, 6–17 × ca 2 cm; fruits elliptic to rounded, 1–1.1 cm × 8–9 mm, apex slightly depressed, ripening bright red,

    Habitat

    Dry, deciduous dipterocarp-oak forests, on shale or granite in very hard soil, 300–1500 m asl.

    Images

    Distribution

    Native to:

    Thailand

    Amorphophallus macrorhizus Craib appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1994 Kerr, A.F.G. [1220], Thailand K000291491 Unknown type material
    Jan 1, 1994 Kerr, A.F.G. [1140], Thailand K000951853
    Jan 1, 1994 Kerr, A.F.G. [13374], Thailand K000951854
    Jan 1, 1994 Put, N. [3959], Thailand K000291498 Unknown type material
    Jan 1, 1994 Put, N. [3959], Thailand K000291499 Unknown type material
    Dec 17, 1990 Kerr, A.F.G. [13], Thailand K000951855
    Jan 1, 1983 Put, N. [3959], Thailand K000291500 holotype
    Thailand 29047.619
    Thailand 29047.620
    Thailand 51308.000
    Kerr, A.F.G. [1220], Thailand K000291492 Unknown type material
    Kerr, A.F.G. [1220], Thailand K000291495 Unknown type material
    Kerr, A.F.G. [1220], Thailand K000291496 Unknown type material
    Kerr, A.F.G. [1220], Thailand K000291497 Unknown type material
    Kerr, A.F.G. [1220], Thailand K000291604 Unknown type material
    Boyce, P.C. [1143], Thailand 29047.947
    Thailand 29047.782
    Kerr, A.F.G. [1220], Thailand K000291493 Unknown type material
    Kerr, A.F.G. [1220], Thailand K000291494
    Kerr, A.F.G. [1140], Thailand K000951852

    First published in Bull. Misc. Inform. Kew 1912: 419 (1912)

    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.
    • 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.

    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.
    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 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