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

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

    [CATE]

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

    Distribution

    Thailand, Nakhon Sawan and Kanchanaburi Provinces.

    Thailand. Endemic.

    General Description

    Tuber short elongate, rarely branching, to 8 cm long, to 3 cm in diam. Leaf solitary; petiole terete, 25-30 cm long, 7-8 mm in diam., uniformly pale reddish brown; lamina 17- 20 cm in diam., main segments with few, relatively large leaflets, winged to the base. Leaflets elliptic-oblong, 6-11 cm long, 2.8-4.5 cm in diam., acute-acuminate, upper surface rich dark green, margin narrowly lined purplish-red, lower surface pale green, margin as upper surface. Inflorescence solitary; peduncle 20 cm long, 5 mm in diam., as petiole; spathe ovate, slightly concave, erect, 6 cm long, 4 cm in diam. greenish white all over, margins involute, apex acute, base within densely clothed with short, fleshy, complexly-branched verrucae. Spadix sessile, longer than spathe, 1l.5 cm.; female zone cylindric, 0.5 cm long, 0.7 cm in diam., flowers adjacent, not densely congested; male zone cylindric-conic, base slightly constricted, 3 cm long, 0.6 cm in diam. at the base, 0.5 cm at the apex, flowers congested; appendix 8 cm long, ca. 0.7 mm in diam., narrowly elongate conical, tapering from base to apex, laterally flattened, base slightly attenuate, apex narrowly obtuse, surface irregularly rugulose, pale yellowish green, emitting a strong smell of gas (oligomethyl-oligosulphides). Ovaries strongly depressed, 2.5-3 mm in diam., 1 mm high, pale green, bilocular; sty le 0.4 mm long, 1.5 mm in diam., white; stigma disciform, 2 mm in diam., 0.3 mm high, subentire to shallowly 4-5-lobed, grooves between lobes radiating from the centre, central depression slightly elongate, margin sometimes slightly notched and lobed-sinuous, surface minutely rugulose, white. Male flowers consisting of 2-5 stamens; stamens 1 mm high, 1-1.5 mm in diam., polygonal in cross-section; filaments ca. 0.5 mm long, fused, whitish; anthers ca. 0.5 mm long, truncated or slightly conical, pale greenish, pores apical, rounded or in the lowermost lunate to circular. Pollen striate.

    Tuber short or long elongate, rarely branching, to 20 × 5 cm. Leaf solitary; petiole terete, 25–70 cm × 7–19 mm, uniformly pale reddish brown or with narrow, whitish pinkish longitudinal stripes or linear spots; leaf blade 17–60 cm wide, main segments with few, relatively large leaflets, winged to the base; leaflets elliptic-oblong, 6–18 × 2.8–8.5 cm, acute-acuminate, adaxially rich dark green, margin narrowly lined purplish red, abaxially pale green, margin as adaxially. Inflorescence solitary; peduncle 20–40 cm × 5–10 mm, appearance as petiole; spathe ovate to broadly ovate, slightly concave, erect, 6–11.5 × 4–13 cm, greenish white all over, margins involute, apex acute, slightly hooded, base within densely clothed with short, fleshy, complexly branched verrucae; spadix sessile, longer than spathe, 11.5–30 cm long; pistillate flower zone cylindrical, 5–11 × 7–11 mm, flowers more or less congested; ovaries strongly depressed, 1 × 2.5–3 mm, pale green, bilocular; style 0.4 × 1.5 mm, white; stigma disciform, 0.3 × 2 mm, subentire to shallowly 4–5-lobed, grooves between lobes radiating from the centre, central depression slightly elongate, margin sometimes slightly notched and lobed–sinuous, surface minutely rugulose, white; sterile interstice present or absent, staminodes congested; staminodes as staminate flowers but slightly shorter and without thecae; staminate flower zone cylindrical to cylindrical-conical, base slightly constricted, 3–5 cm × 6–13 mm at the base, 5–12 mm at the apex, flowers congested; staminate flowers 2–5-androus; stamens polygonal in cross-section, whitish; appendix 8–24 cm × 7–20 mm, narrowly elongate conical, tapering from base to apex, laterally flattened, base slightly attenuate, apex narrowly obtuse or acute, surface irregularly rugulose, pale yellowish green. Infructescence cylindrical, 3–6 × 3 cm; fruits ovoid-lageniform, the swollen basal region of the style prominent, 10–15 × 6–10 mm, smooth, ripening white.

    Habitat

    Secondary scrub.

    Distribution

    Native to:

    Thailand

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

    First published in Aroideana 29: 64 (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