1. Family: Araceae Juss.
    1. Genus: Stylochaeton Lepr.
      1. Stylochaeton hypogeum Lepr.

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

    [CATE]

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

    Habitat
    Savanna.
    Distribution
    Upper Guinea. Senegambia: on sand-hills, in the districts of Cayor, Oualo and Cape Verd, Leprieur.
    General Description
    Rhizome horizontal, about 1/2 in. thick, fleshy, with thick fleshy simple roots. LEAVES 5-8 to a plant, contemporary with the flowers; petiole 3-6 in. long, yellowish-green spotted with purplish-violet, the sheathing part subterranean; blade hastate or hastate-sagittate, as long as the petiole; front lobe oblong-lanceolate, acuminate; basal lobes somewhat spreading, oblong acute, about 1/3 as long as the first lobe. INFLORESCENCE: Spathe very shortly pedunculate, arising from the rootstock by the side of the leaves, 2 in. long; tube subterranean, cylindric, slightly inflated at the base; limb ovoid, acute, with a narrow mouth on one side. Spadix shortly protruding from the mouth of the spathe. Female flowers 6-9 or more (in one cycle?), adnate to the base of the spadix, connate. Perianth adnate to the apex of the ovary (?), with a short free oblique urceolate limb. Ovary inferior (?); style moderately slender, much exserted, erect, "articulated" (thickened) below the middle. Fruit subterranean, consisting of the connate ovaries, fleshy, included in the dilated base of the spathe.
    Diagnostic
    Inflorescence and leaves present at the same time; spathe 2 inches long.
    [CATE]

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

    Diagnostic
    S. kerensis has sometimes been confused with the W African S. hjpogaeus Lepr. (1834) which has narrower leaves, is usually taller and has a shorter spadix compared to the spathe. Ovary adnate to the perianth. Lateral leaf lobes 2.5-3.5 cm long, separated by an oblong to wide sinus.
    General Description
    Rhizome fleshy, articulate, branched. LEAVES: petiole about 10-20 cm long, sheathed at least to the middle, sheath with purple bands above ground; blade hastate to hastate-sagittate, central lobe 7-10 x 1.8-2.5 cm, lateral (basal) lobes 2.5-3.5 x 1-2 cm. INFLORESCENCE below ground: peduncle 0.6-1.2 cm long, cataphylls 3-4. Spathe with a subterranean tube 3-3.5 cm long and a boat-shaped blade opening only by a lateral slit, c 1.2 cm long, leathery. Spadix about as long as spathe or slightly longer. Female flowers: 5, perianth obliquely urn-shaped, c 7 mm long, joined to the axis for nearly all its length; style c 3 mm long, incurved; stigma discoid. Male flowers: perianth cup-shaped, 0.5-0.8 mm long; filaments filiform c 0.5 mm long. FRUIT not known.
    Habitat
    Habitat unknown.
    Distribution
    Sudan, Ethiopia.

    Images

    Distribution

    Native to:

    Benin, Burkina, Chad, Ethiopia, Ivory Coast, Mauritania, Nigeria, Senegal, Sudan

    Stylochaeton hypogeum Lepr. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2010 Barter, C. [3424], Nigeria K000099454 Unknown type material
    May 8, 1997 Merello, M. [1479], Ghana K000211552
    Apr 4, 1976 Lowe, J. [2897], Nigeria K000211555
    Sep 29, 1975 Schronen, J. [220], Burkina Faso K000211547
    Nov 1, 1964 Vigne, C. [3757], Ghana K000211550
    Nov 1, 1964 Vigne, C. [4530], Ghana K000211551
    Nov 1, 1964 Barker, A.J.D. [1472], Nigeria K000211554
    Hepper, F.N. [3893], Nigeria K000211553
    Beccari, O. [77], Eritrea K000099436
    Beccari, O. [167], Eritrea K000099437 syntype
    Irvine, F.R. [4601], Ghana K000211549
    Adam, J.-.G. [3914], Ghana K000211548

    First published in Ann. Sci. Nat., Bot., sér. 2, 2: 185 (1834)

    Accepted by

    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • Akoègninou, A., van der Burg, W.J. & van der Maesen, L.J.G. (eds.) (2006). Flore Analytique du Bénin: 1-1034. Backhuys Publishers.
    • 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.
    • Barry, J. P. & Celles, J.S. (1991). Flore de Mauritanie 2: 360-550. Centre Regional de Documentation Pedagogique, Nice.

    Literature

    CATE Araceae
    • Knecht, M. 1983. Aracées de la Côte dIvoire - Contribution à l'étude biosystématique des représentants d'Aracées de la Côte d'Ivoire.' Phanerogamarum Monographiae Tom.. XVII: 290 pp.
    • Brown, N.E. 1901. Aroideae. Flora of Tropical Africa. 8 (1): 137-192
    Kew Backbone Distributions
    • Bogner, J. (2011). Four new species of Culcasia and Stylochaeton (Araceae) from tropical Africa Willdenowia 41: 57-66.
    • Barry, J. P. & Celles, J.S. (1991). Flore de Mauritanie 2: 360-550. Centre Regional de Documentation Pedagogique, Nice.

    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