1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus hetterscheidii Ittenb. & Lobin

        This species is accepted, and its native range is W. Central Tropical Africa.

    [CATE]

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

    Distribution
    W Zaire to Gabon and northwards to the outermost southwest of the Central African Republic
    General Description
    Tuber depressed-globose, 5-10 x 1.5-6 cm, brownish, upper half producing short, rhizomatous offsets. LEAF to c. 100 cm long; petiole to 60 cm long, 1.5 cm in diameter, pale green with numerous confluent blackish brown spots, often with a dark metallic green shimmer; lamina 60-100 cm in diameter, very strongly pinnate, rhachises narrowly winged; terminal leaflets elliptical to elongate-elliptical, 5-20 x 1-6 cm, acuminate, margin undulate, upper face green and somewhat glossy, lower face dull green and glossy. INFLORESCENCE: Cataphylls 3, the longest 20-30 cm long, reddish to pinkish, with elongate, irregular dark brown spots. Inflorescence to 60-90 cm long, developing alongside the young leaf, long-peduncled, much longer than cataphylls; peduncle 30-50 cm long, 1-1.5 cm in diameter, coloured as petiole; spathe erect, 12-30 cm long, somewhat overlapping with a rectilinear purple edge, separated by a slight constriction in a elongate-ovoid tube and a short-triangular limb; tube 6-15 x 5-7 cm, outside bright green or creamy, basal part with large, confluent dark green spots, inside bright green to creamy with numerous small, dark violet, to blackish punctation and basally densely covered with whitish to pale pinkish, 2-3 mm long hairlike emergences upwards reduced to minute wans, otherwise epidermis papillose; limb 6.5-15 x 4-10 cm, outside bright green, to the margins grading into purple, margins smooth and dark purple. Spadix sessile, 25-40 cm long, longer than spathe. emerging excentrically from the opening of the spathe; pistillate ume cylindrical. 2-4 x 1.7-2 cm. flowers densely congested; staminate zone ± cylindrical, 2-3 x 1.5-2.2 cm. flowers very densely congested; either without or with an up to 1 mm long sterile zone between the pistillate and staminate zone; appendix 23-35 cm long, 1-2 cm in diameter at the base, cylindrical to conical, with rounded apex, above the staminate zone not constricted, red-brown, rough to velvetlike, covered with very short elongate warts; ratio of pistillate to staminate zone length 1 - 1.3 : I. Pistillate flowers 4-5 mm long; ovaries elongate-ovoid to cubic, 2.5-3 x 2 mm. 2(-3)-locular, dark green; style 0.5-1.2 x 1 mm; stigma 1 - 1.2 x 1-1.5 mm, ± oval in cross section, depressed-circular in lateral section, with 2(-3) small, roundish to cylindrical humps, papillose, brown. Staminate flowers 2.5 x 1.5 mm long; anthers ovoid, yellowish orange; connective with two small grooves and numerous small dark violet to blackish spots, therefore appearing dark violet; filaments only 0.5-0.8 mm long but rather wide, free; pores oval, one apical pore per theca. Pollen inaperturate, exine smooth (pistilate). INFRUCTESCENCE unknown.
    Diagnostic
    Amorphophallus herterscheidii is not rare in the Sibang Forest of Gabon (Maesen & de Wilde in sched.). As A. barthlottii and A. johnsonii the species belongs to the large African section with hairlike emergences at the base of the spathe tube. A. hetterscheidii is most similar to A. bequaertii, A. calabaricus and A. angolensis, differing from the last species by the ovoid spathe tube, a less distinctly lobed stigma, the appendix base not being constricted and the base of the spadix being straight (versus shallowly sigmoid). Basal inner side of the spathe with hair-like emergences; 2-3 globose stigma humps; Style present.

    Distribution

    Native to:

    Central African Repu, Gabon, Zaïre

    Amorphophallus hetterscheidii Ittenb. & Lobin appears in other Kew resources:

    First published in Willdenowia 27: 152 (1997)

    Accepted by

    • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.
    • Ittenbach, S. (2003). Revision der afrikanischen Arten de Gattung Amorphophallus (Araceae) Englera 25: 1-263.
    • 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.

    Literature

    CATE Araceae
    • Ittenbach, S. & Lobin, W. 1997. Notes on the gunus Amorphophallus (Araceae), 6: Six new species and two new subspecies from Africa Willdenowia. 27: 147-160
    Kew Backbone Distributions
    • Sosef, M.S.M. & al. (2006). Check-list des plantes vasculaires du Gabon Scripta Botanica Belgica 35: 1-438.

    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