1. Family: Araceae Juss.
    1. Genus: Amorphophallus Blume ex Decne.
      1. Amorphophallus mangelsdorffii Bogner

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

    [CATE]

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

    General Description
    Tuber depressed-globular, 4.5-6 × c. 3 cm, somewhat sunken in the centre, smooth, dark brown outside, yellow inside. LEAVES: Petiole 32-48 cm long, at the base c. 0.8 cm and apically 0.4-0.6 cm in diam., light green, sheath c. 14 cm long (from there the peduncle emerging). Leaf blade dissected in three main parts only, each either ± bifid and arising directly from the apex of the petiole, or once more divided and each leaflet with a petiolule 3 cm long and 0.3-0.4 cm in diam.; leaflets 9-14 × 2.5-4 cm, narrowly elliptic to lanceolate, decurrent, green on the upper and lighter green on the lower surface, base mostly somewhat oblique, apex acuminate; venation reticulate, 9-12 primary lateral veins on each side of the strong middle vein, second order lateral veins thinner than the primary ones, inner collecting vein 1.5-2 mm from the margin of the leaflet, one or two thinner collecting veins very close to the margin. INFLORESCENCE: Peduncle 17-27 cm long and 0.4-0.8 cm in diam., light green as the petiole and never spotted. Spathe 7-9 cm long, c. 3.5 cm wide (at broadest point), only very slightly constricted or nearly so, initially upright, later limb reflexed and twisted, convolute at base and forming a subglobular tube of 1.5-2 cm diam., spathe outside light green at base and then becoming greenish yellow, inside at base of the tube greenish and smooth with somewhat prominent veins, then becoming greenish yellow to ± cream, apex acute. Spadix clearly longer than spathe, 10-12 cm long, sessile; pistillate portion short, c. 0.5 cm long and 1.1 cm in diam., flowers in up to four spiral rows; staminate portion c. 1.7 cm long and 1.3 cm in diam., yellow to somewhat beige; pistillate and staminate flowers contiguous; appendix elongate-conoid to subcylindric, 8.5-9.5 cm long, at base for some distance cylindric and there c.1.3 cm in diam., becoming narrower towards the blunt apex, greenish yellowish on the whole length. Staminate flowers densely arranged; stamen subrectangular in view from above, 1.3-1.4 mm long and 0.7-0.9 mm wide, 1.5-1.6 mm high; connective broad, 1.2-1.4 mm long and 0.6-0.7 mm wide, rounded apically, somewhat higher than the thecae, greenish yellowish; thecae lateral, golden yellow, c. 0.2 mm below the connective, c. 1 mm long and c. 0.6 mm wide, opening by an apical slit of 0.5-0.6 mm length; pollen inaperturate, globular, 38-42 µm in diam., exine echinate, spinulae small, 1.2-1.3 µm long and lax. Pistillate flowers densely arranged; ovary ovoid, 1.8-1.9 mm long and c. 1.5 mm in diam., light green, whitish at base, unilocular, with one anatropous ovule, this roundish and with a very short funicle, with short, papillose and densely arranged trichomes on the placenta (visible in fresh material only); stigma small, subhemispheric, sessile, 0.6-0.7 mm in diam., whitish, papillose. INFRUCTESCENCE unknown. Odour at anthesis like fermenting fruits and somewhat spicy.
    Diagnostic
    Flowering simultaneous with the leaf, inflorescence appearing at the end of the rainy season (March); leaf blade not much dissected, the few leaflets relatively large (up to 14 cm long); spathe limb reflexed at anthesis, greenish yellow to very light green; pollen exine spiny (echinate)
    Distribution
    Western Madagascar, Tsingy du Maintirano; only known from the type locality near the village Tsimaloto. Amorphophallus mangelsdorffii is a geophyte that grows in leaf-litter filled holes and crevices on limestone in tropical deciduous forest, together with Pachypodium cf. sofiense (Poiss.) H. Perr., Disperis erucifera H. Perr., Habenaria sp. and Dracaena reflexa Lam. The limestone formation of the Tsingy du Maintirano overlies an old sandstone plateau

    Distribution

    Native to:

    Madagascar

    Amorphophallus mangelsdorffii Bogner appears in other Kew resources:

    First published in Willdenowia 33: 299 (2003)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

    Literature

    CATE Araceae
    • Bogner, J. 2003. A New Amorphophallus Species from Madagascar. Willdenowia. 33: 299-303

    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