1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus fuscus Hett.

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

    [CATE]

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

    Distribution

    “Northern Thailand between Thailand and Myanmar”

    Only known from the uncertain geographical data on the type specimen.

    General Description

    Tuber depressed globose, 4-10 x 4-7 cm, dark brown, offsets rhizomatous, to 15 x 1.5 cm, scaly. Petiole 34-70 x 1-2 cm. smooth, mauve with dark brown to dark reddish brown, scattered, elongate oval or oval spots; lamina 52-80 cm in diam. rachises winged above the basal branchings; leaflets elliptic to elliptic-lanceolate, 5-20 x 2-5 cm., broadly acuminate, with short apiculum, upper side green, venation visibly highly reticulate. Inflorescence long-peduncled; peduncle 16 cm long, 7 mm in diam., smooth, brown w ith scattered, elliptical very dark brown spots; spathe erect, base and limb not separated, shallowly convolute in the lower part, ovate, 10 cm long, 7 cm wide, acute, outside glossy brown, the lower part with very few, scattered, small, orbicular dark brown spots, upper part darker brown towards the margin, inside pale dirty yellow-green, the base dark maroon, with several very shallow warts. Spadix sessile, as long as the spathe, 10 cm long; female zone cylindric, 12 mm long, 12 mm in diam., flowers congested; male zone subcylindric, slightly narrowing to the apex, 3 cm long, 12 mm in diam., flowers congested; appendix cylindric-conical, base attenuate, apex rounded, 5.8 cm long, 1.5 cm in diam. above the base, smooth, lower part with shallow, more or less diamond-shaped staminodes, diminishing upwards, surface off-white, developing a strong oligomethyl-oligosulphide smell. Ovaries 4-5-angulate, apex hemispheric, 2-2.5 mm high, 2 mm in cliam., base white, otherwise dirty purple, unilocular; style elongate conical, held almost parallel to the spadix, 1.5- 2 mm long, 1 mm in diam. at the base, 0.8 mm diam. at the middle, apex slightly expanded and shallowly lobed, pale green, base dirty purplish; stigma velY thin, 0.3 mm high, 1 mm in diam., draped over the lobes of the style apex, radially 3-4-lobed-sinuate, shallowly verrucate, dirty pale greyish. Male flowers consisting of 3-5 stamens; stamens 2.5 mm long; filaments thick, fused entirely, 2 mm long, 2 mm in diam., those of the lower flowers much broader, up to 5 mm in diam., off-white; anthers truncate, 0.5 mm long, 1 mm in diam., off-white suffused with pale dirty purple; connective broad, off-white; pores slit-like, marginal. Pollen striate.

    Tuber depressed globose, 4–7 × 4–10 cm, offsets rhizomatous, to 15 × 1–1.5 cm, scaly. Leaf solitary; petiole 34–70 × 1–2 cm, smooth, mauve with dark brown to dark reddish brown, scattered, elongate oval or oval spots; leaf blade 52–80 cm, rachises winged above the basal branchings; leaflets elliptic to elliptic-lanceolate, 5–20 × 2–5 cm, broadly acuminate, with short apiculum, adaxially green, venation visibly highly reticulate. Inflorescence long-pedunculate; peduncle 15–20 cm × 7–9 mm, smooth, brown with scattered, elliptic very dark brown spots; spathe erect, base and limb not separated, shallowly convolute in the lower part, ovate, 10–15 × 7–10 cm, acute, exterior glossy brown, the lower part with very few, scattered, small, orbicular dark brown spots, upper part darker brown towards the margin, interior pale dirty yellow-green, the base dark maroon, with several very shallow warts; spadix sessile, as long as the spathe or slightly shorter, 10–13 cm long; pistillate flower zone cylindrical, ca 12 × 12 mm, flowers congested; ovaries 4–5–angular, apex hemispherical, 2–2.5 × 2 mm, base white, rest dirty purple, unilocular; style elongate conical, held almost parallel to the spadix, 1.5–2 × 1 mm at the base, 0.8 mm diam. at the middle, apex slightly expanded and shallowly lobed, pale green, base dirty purplish; stigma very thin, 0.3 × 1 mm, draped over the lobes of the style apex, radially 3–4-lobed–sinuate, shallowly verrucate, dirty pale greyish; staminate flower zone subcylindrical, slightly narrowing to the apex, ca 3 × 1.2 cm, flowers congested; staminate flowers 3–5-androus, off-white; appendix cylindrical-conical, base attenuate, apex rounded, 5.8–7.8 × 1.5–1.7 cm above the base, smooth, lower part with shallow, more or less diamond-shaped staminodes, diminishing upwards, surface off-white. Fruit unknown.

    Habitat

    Limestone cliffs.

    Distribution

    Native to:

    Thailand

    Amorphophallus fuscus Hett. appears in other Kew resources:

    First published in Aroideana 29: 55 (2006)

    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.H.A. (2011). World checklist of selected plant families published update Facilitated by the 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