1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus richardsiae Ittenb.

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

    [CATE]

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

    Diagnostic
    Amorphophallus richardsiae is most similar to A. swynnertonii, which actually is not conspecific with A. abyssinicus.  Basal inner side of the spathe with distinctly raised, parallel running ribs or with platform-like emergences which mimic ribs; open limb of the spathe short to elongate-broadly elliptic (‘oval’) triangular, not twisted along its length axis by 180º; Spadix usually ± as long or somewhat longer than the spathe, basal inner side of the spathe with platform-like and wart-like emergences, these forming ribs which are unevenly high in lateral view and interrupted; Ovary bi- to trilocular.
    Distribution
    Borderland of Zambia and Tanzania, from Mbala to the Kalambo waterfalls
    General Description
    Tuber and leaf unknown. INFLORESCENCE: Cataphylls 2(1), the inner 2.3-13.5 x 2-6 cm, the outer 7 x 1.2 cm, broad-oval, creamy with a pink flush and brownish elongate-oval spots. Inflorescence to 40 cm long, long-peduncled, appearing before the leaf; peduncle 12-15 cm long, greenish with numerous small confluent, elongate to oval, dark green to brown spots. Spathe erect, 16-24 cm long, separated by a distinct constriction in an asymmetrical oval to triangular tube and a wide, triangular to oval limb; tube 5-8 x 4-6 cm, outside brownish green at the base, higher up becoming green, veins brownish to bright purple and densely covered with round dark greenish and brownish spots; inside at the base purple, with strongly raised veins, these crowded with warts and fag-shaped emergences, therefore veins frequently appearing as uneven or evenly high ridges; constriction inside with a 1-2 cm wide, greyish green waxy band; limb 10-17 cm long, upwards oblique, outside dirty green with violet veins, inside brown purple, margins undulate. Spadix sessile, 21-27 cm long, equal to or up to 6 cm longer than spathe; pistillate zone cylindrical, 1.2-2.5 x 1.2-1.5 cm, flowers congested; staminate zone cylindrical to slightly ovoid, 3.2-6 x 1-1.5 cm, flowers congested; appendix 14-20 cm long, elongate-conical to cylindrical, above the staminate zone slightly constricted and with grooves, purple; staminodes absent; without a sterile zone between the pistillate and staminate zone; ratio of pistillate to staminate zone length 0.35-0.4 : 1, Pistillate flowers 2.5-3.5 mm long; ovaries ± ovoid, 2-2.5 x 1.5-2 mm, 2-3-locular, dark yellowish; stigma sessile, shallowly 2-3-lobed, roundish flat in lateral section, circular to oval in cross section, 1-2 x 1-1.5 mm, brown to black. Staminate flowers 1-1.5 mm long; anthers cubic, free, 0.5 x 0.7 mm, bright brown; filaments 0.7-1 x 0.7-1 mm, free; connective slightly grooved and with dark strips; pores circular, one apical pore per theca. INFRUCTESCENCE unknown. Pollen inaperturate, exine striate.

    Images

    Distribution

    Amorphophallus richardsiae Ittenb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2003 R.G.Robertson [207], Zambia K000499368

    First published in Willdenowia 27: 157 (1997)

    Accepted by

    • Haigh, A. & Boyce, P.C. (2012). Flora Zambesiaca 12(1): 1-54. Royal Botanic Gardens, Kew.
    • 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

    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