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

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

    [CATE]

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

    General Description
    Tuber dark brown, white or yellow inside, depressed globose, to 9cm high, to 13cm in diam., weighing up to 500g, root scars with an annular thickening, seasonally developing several offsets; offsets sessile, rounded or elliptic, ca. 2.5 × to 1.2cm. Leaf solitary; cataphylls 3, dark grayish green, largely covered with pale pinkish, rhombic spots, 6–35cm; petiole medium to dark olive-green or dark olive-brown with several rhombic or narrowly elliptic, pale whitish greenish spots, 10–80cm, 0.5–2.5cm in diam. at base, glabrous; leaf blade highly dissected, to 190cm in diam.; rachises broadly winged except below basal branching points, basal branching points sometimes developing intercalary bulbils after disturbance; leaflets abaxially paler, adaxially dark green, often with a bluish sheen when young, margin often narrowly violet, elliptic, 10–40 × 5–13cm, base broadly decurrent, apex acuminate. Inflorescence solitary, long pedunculate; cataphylls as with leaf; peduncle colored as petiole, 13–60cm, 1–2cm in diam. at base. Spathe shortly convolute at base, erect, concave, arching over spadix, outside white or pale greenish white, rarely dark green, sometimes near base with paler, occasionally ringlike spots, or sometimes flushed with pale pinkish, margin sometimes lined pinkish, inside pale greenish white without spots; limb outside dirty creamish, sometimes with faint spots, margin sometimes pale pinkish violet, inside ± cream-colored or pale greenish white, margin sometimes pale pinkish violet, broadly ovate, 9–29 × 4–20cm, inside base glabrous or with a few scattered, punctiform warts, apex obtuse or acute. Spadix creamy white or pale pinkish, much shorter than spathe, 3–18cm; stipe pale green with whitish spots, 0.5–2.5cm; flowers unisexual; female zone cylindric, slightly conic or obconic, 0.8–3.5 × 0.5–2cm, flowers congested but in proximal part sometimes loosely arranged; ovary green, pale green, brownish green, or purplish, near style insertion sometimes dirty creamish, globose, subglobose, or depressed, orbicular or angulate in outline, 2–2.5mm high, 2–4mm in diam., 2-loculed; style straight or curved, green or dirty pale pinkish, narrowly to broadly conic, base (articulation) thickened, 1–2.5 × 0.3–1mm; stigma pale yellowish or dirty brownish, variable, usually distinctly broader than style diam., disciform to subhemispheric, more rarely superficial, punctiform, orbicular or oval in outline, with a shallow central depression to clearly 2-lobed, verrucate; lobes rounded, 0.4–0.6mm high, 0.6–1.2mm in diam.; male zone conic or fusiform-cylindric, rarely obconic, sometimes (partly) laterally compressed, 1–4 × 0.6–3.5cm, flowers congested; male flowers consisting of 3–5 stamens; stamens 3–3.5mm; filaments 0.5–2mm, basally or up to 2/3 of length connate; anthers creamy white, 1.5–3 × 1–2mm; connectives flat or with a ridgelike extension, perpendicular to long axis, either small or very large, maroon or dark brown; pores apical, elongate; appendix ovoid, conic, or triangular-ovoid, rarely subcylindric, inflated or strongly laterally compressed, 3–11 × 1.5–5cm, glabrous or verruculose, rarely entirely echinate, often with a few longitudinal shallow or deep, broad folds, or irregularly folded throughout, base strongly truncate, apex obtuse, rarely acute, usually with a few broadly conic staminodes. Infructescence cylindric or subglobose, 4–11 × 3.5–5cm, dried male zone and appendix often remaining, as well as dried spathe. Berries 1- or 2-seeded, at first green, at maturity turning blue and finally violet, at apex with dried style and stigma remaining.
    Phenology
    Fl. Apr–May.
    Habitat
    Shaded places in primary evergreen or mixed evergreen/deciduous forests, on metamorphic bedrock, in rich soils, or secondary forests, thickets, forest margins.

    Images

    Distribution

    Native to:

    China South-Central, China Southeast, Laos, Thailand, Vietnam

    Amorphophallus yunnanensis Engl. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 11, 1992 Kerr, A.F.G. [s.n.], Thailand K000291529 Unknown type material
    Jan 11, 1992 Kerr, A.F.G. [s.n.], Thailand K000291528 Unknown type material
    Jan 11, 1992 Kerr, A.F.G. [s.n.], Thailand K000291527 Unknown type material
    Jan 11, 1992 Kerr, A.F.G. [s.n.], Thailand K000950342 Unknown type material
    Thailand 29047.791
    29047.799
    Mayo, S. [623], Thailand 29047.498
    Mayo, S. [621 T3D], Thailand 46106.000
    Mayo, S. [622 T3N], Thailand 46152.000

    First published in Pflanzenr., IV, 23C: 109 (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.

    Literature

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

    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