1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus taurostigma Ittenb., Hett. & Bogner

        This species is accepted, and its native range is N. & W. Madagascar.

    [CATE]

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

    Phenology
    Flowering at the onset of the rainy season (Sep to Oct), fruiting starts in Dec
    Diagnostic
    Style present, distinct, stigma laterally compressed, deeply 2- or 3-lobed, lobes broadly or narrowly conical, acute or somewhat obtuse, tuber subglabose, offsets rhizomatous.
    Habitat
    Common species, preferring shady humus pockets between or on rocks. On soils with a pH of 5.4-5.8
    Distribution
    Endemic on Madagascar.
    General Description
    Tuber depressed-globose to disciform, to ca. 20 cm in diam., pale brown, seasonally developing long, rhizomatous offsets with thickened top, the latter often loosening through rotting of the rhizomatous part. LEAF solitary, developing after flowering in the same season; petiole 60-130 cm long, 3-6 cm in diam., smooth, background colour pale grey, covered with numerous distinct or indistinct, partly confluent, circular pale brown spots often with dark brown margins; lamina, to ca. 180 cm in diam., highly dissected; leaflets ovate, elliptic-lanceolate or lanceolate, long acuminate, 1-26 cm long, 1-6 cm in diam., upper surface green with a distinct pinkish and whitish margin at the base. INFLORESCENCE long peduncled; peduncle 50-110 cm long, 2.5-3 cm in diam., coloured as petiole; spathe 22-50 cm long, ca. 15-30 cm in diam., between limb and base only a very shallow constriction on the dorsal side, outside base background pale greyish brown with minute white dots but largely covered by numerous, confluent, rounded spots, these bright pale green, usually with a dark green margin, upwards entirely dark green, outside limb pale purplish with a dense pattern of punctiform, dirty whitish-greenish dots, near the margin flushed dirty green, in the centre with dirty pale greyish-greenish rounded spots, limb strongly longitudinally folded and subspiralling, inside limb dirty purplish brown with faint, dark green spots and dark green veins, to the margin dark brown, inside base with broad, strong, branching and interconnecting ridges, dirty purplish brown, upper half dirty whitish and pale brownish with rounded, partly confluent pale green spots with darker green margins filled with whitish green dots, upwards turning entirely dark green. Spadix sessile, 30-68 cm long, longer than spathe; female zone cylindric, 1.5-5 cm long, 2-2.5 cm in diam., flowers distant; male zone cylindric to obconic, 2.5-6 cm long, 2-3.5 cm in diam., flowers congested; appendix elongate fusiform, 26-60 cm long, 2-4 cm in diam. at the broadest point, smooth but basal part shallowly grooved, apex narrowly obtuse, dirty olive-green, upwards slightly paler and brighter. Ovaries slightly elongate, laterally compressed, ovate to rounded in cross-section, 2-3 mm long, 1.3-2 mm in diam., base bright green, upper part blackish, unilocular or incompletely 2-locular, septum only developed (but weakly) in the upper half, 1 or 2 ovules; style conic, suddenly narrowed at the middle, 1-1.5 mm long, 1.2 mm in diam. at the base, 0.6-0.8 mm in diam. at the top, blackish but the base flushed with green; stigma strongly and deeply bilobed or tnlobed, laterally compressed, rounded in cross-section, 1.5 mm long, 1.8 mm in diam. at the base, pale whitish green turning dirty yellowish-orange, lobes strongly diverging, narrowly conic, acute, surface strongly verruculate but the top sometimes devoid of stylar tissue. Male flowers consisting of 3 to 5 stamens; stamens 1.5-3 mm long; filaments 0.5-1.5 mm long, basally connate; anthers 1-1.5 mm long, 1 mm in diam., truncate, off-white, connective olive green turning brown, pores elongate, curvate, connective slightly raised. Pollen inaperturate, ellipsoid, exine fossulate. INFRUCTESCENCE: Berries ovoid, 0.7-1 cm long, 0.5-0.6 cm in diam., l-(2-)seeded.
    [CATE]
    Use
    The boiled tubers are eaten by the Sakalava tribe

    Distribution

    Native to:

    Madagascar

    Amorphophallus taurostigma Ittenb., Hett. & Bogner appears in other Kew resources:

    First published in Bot. Jahrb. Syst. 121: 12 (1999)

    Accepted by

    • 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
    • Hetterscheid, W.L.A., Ittenbach, S. & Bogner, J. 1999. Notes on the genus Amorphophallus (Araceae), 10: Revision of the endemic Amorphophallus species of Madagascar. Bot. Jahrb. Syst.. 121: 1-17

    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