1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus napiger Gagnep.

        This species is accepted, and its native range is E. Thailand to Vietnam.

    [CATE]

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

    Distribution

    Thailand, Vietnam, Laos

    General Description

    Tuber narrowly elongate, 5–25 × 1–3 cm, growing by twisting around stones, etc., branching, growing area with distinct, thin, quickly disappearing scales, leaving ring-like scars. Leaf solitary; petiole slender, 20–100 cm × 5–13 mm, background various, pale green, green to nearly black, with numerous small and larger, rounded to irregular or rhombic spots, these variously coloured, epidermal cells strongly conical, resulting in a velvety appearance to the surface; leaf blade 20–120 cm diam., rachises narrowly winged throughout, upper part of rachises at the centre of the leaf blade reddish; leaflets lanceolate to linear-lanceolate, acute, 3–19 cm × 7–20 mm wide, adaxially deep rich green with a distinct greyish zone along the midrib. Inflorescence solitary, long pedunculate; peduncle 27–70 × 1–2 cm, smooth, olive-green with irregular, elongate or prismatic, greyish spots with dark green punctuation and numerous small greyish dots in the lower half, or mottled grey and brownish; spathe broadly to elongate triangular, base rounded, 14–29 × 8–20 cm, acute, lower 2/3 loosely convolute, exterior bright pale green, or pale pinkish with darker veins, occasionally with a pale or darker brownish flush near the margin, base with several, indistinct paler spots, interior as exterior but occasionally limb dark maroon with green veins, base dark maroon and shallowly ridged or with slightly elongate verrucae; spadix stipitate or sessile, shorter than spathe or slightly longer, ca 10–24.5 cm; stipe ca 0.5–1 cm long; pistillate flower zone cylindrical or elongate obconical, 3–6 × 1–1.3 cm, flowers more or less distant, leaving the pale green spadix axis clearly visible, or the upper ones congested; ovaries depressed, oval in cross-section, 2–3 × 1.5 mm high, lower third in a pocket in the spadix-axis, yellowish green or pale green; style 0.2–1 × 1.3 mm, yellowish green or maroonish; stigma slightly or more distinctly depressed, oval or circular in cross-section, 1.5–2 × 1.3–1.5 mm high, entire or very shallowly bilobed, echinulate, orangeish, brownish or yellowish; sterile interstice sometimes present, ca 0.5 cm long, set with distant staminodes and sometimes with a few hair-like pistillodes; staminodes disciform, circular or oval in cross-section, ca 1–2(–3) mm, white; staminate flower zone cylindrical, ca 5–6 × 1.5 cm, flowers congested, sometimes with one or a few hair-like staminodes; staminate flowers 4–5-androus; stamens ca 2 mm long, deep red, blackish purple or reddish brown; appendix shortly conical to elongate conical, 1.5–14.5 × 1–3 cm, apex acute, blackish brown or nearly black, occasionally with a few black hairs at the apex or near the base. Infructescence cylindrical, ca 9 × 2.5 cm; fruits slightly cordate in lateral view, laterally compressed, ca 1 cm × 6–9 mm, ripening whitish yellow.

    Habitat

    Rocky bamboo-deciduous forest, 250–300 m asl.

    Images

    Distribution

    Native to:

    Laos, Thailand, Vietnam

    Amorphophallus napiger Gagnep. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Kerr, A.F.G. [21436], Thailand K000291505 Unknown type material
    Kerr, A.F.G. [21436], Thailand K000291506
    Sumawong, W [B437], Thailand 34433.000

    First published in Notul. Syst. (Paris) 9: 119 (1941)

    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.

    Literature

    Kew Backbone Distributions
    • 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.

    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