1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus symonianus Hett. & Sizemore

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

    [CATE]

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

    Distribution

    North-Eastern Thailand: Loei, Udon Thani. Endemic.

    General Description

    Tuber depressed globose, 2–10 × 1–6 cm high, producing several annual offsets, these globose, not separating from the main tuber the first season. Leaf solitary; petiole 10–105 × 1–2.5 cm, smooth, pale green with numerous short, narrowly linear, white stripes, the joint with the leaf blade swelling and transforming into a globose or elongate intercalary bulbil, often incorporating the swollen bases of the three main rachises; leaf blade 20–100 cm diam., rachises narrowly winged distally from the basal branchings, the nodes swelling and transforming entirely into globose or elliptic intercalary bulbils; leaflets elliptic to elongate-elliptic, 7–24 × 4–9 cm, acuminate, adaxially green, corrugate, venation strongly impressed, abaxially green, venation strongly raised. Inflorescence solitary, long pedunculate; peduncle largely or entirely hidden by the cataphylls, 10–20 × 5–10 cm, smooth, appearance as petiole; spathe elongate oval or orbicular, sometimes broader than long, slightly concave, apex overarching the spadix, 9–13 × 7–14 cm, base and limb not strongly differentiated, apex obtuse, margins of limb slightly recurved, exterior pale green or flushed with pale reddish brown and with some scattered, more or less distinct whitish dots, interior as exterior, slightly less green, base within smooth; spadix shorter than spathe, sessile, 7–12 cm long; pistillate flower zone slightly obconical, 1.2–2 cm × 8–15 mm at the base, 1.2–2 cm at the apex, flowers congested; ovaries depressed-globose, slightly angular or orbicular, 3 × 2.5–3 mm high, pale green, bilocular; style conical or terete, ca 1 × 0.8 mm at the base, pale green; stigma discoid, large, ca 2.5 × 0.5 mm, entire, with a shallow, slightly elongate central depression, surface glossy white, smooth; staminate flower zone elongate, slightly fusiform, terete or dorso-ventrally compressed, 3.3–4.7 × 1.7–3 cm, flowers congested; staminate flowers 3–5-androus; stamens 1.5 mm long; filaments 0.5 mm long, free; anthers 1 mm long, ca 1.5 mm, truncate, off-white; appendix short conical, slightly dorso-ventrally compressed, 2.7–5.5 × 1.6–3.5 cm, obtuse, smooth, ivory white. Fruit unknown.

    Habitat

    In humus-filled limestone pockets, in soil on slopes, in medium shade.

    Distribution

    Native to:

    Thailand

    Amorphophallus symonianus Hett. & Sizemore appears in other Kew resources:

    First published in Blumea 46: 273 (2001)

    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.

    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

    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