1. Family: Araceae Juss.
    1. Theriophonum Blume

      1. This genus is accepted, and its native range is India, Sri Lanka.

    [CATE]

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

    Habitat
    Tropical forest; geophytes, forest floor, grassy places, ditches, damp sites on rocky, lateritic soil.
    Distribution
    India, Sri Lanka.
    Diagnostic
    Small, seasonally dormant tuberous herbs; leaf blade oblong-lanceolate to sagittate-hastate, fine venation reticulate; spadix male and female zones separated by zone of subulate to filiform sterile organs, terminal sterile appendix smooth; flowers unisexual, perigone absent. Differs from Typhonium, Arisaema and Arum in having apical and basal placentation (basal in Typhonium and Arisaema, parietal to subbasal in Arum ).
    General Description
    HABIT : small, seasonally dormant herbs, tuber small, depressed-subglobose. LEAVES : several. PETIOLE : sheath relatively long. BLADE : sagittate-hastate or hastate, sometimes linear-lanceolate or oblong-ovate; primary lateral veins pinnate, forming submarginal collective vein, 1-2 distinct marginal veins also present, higher order venation reticulate. INFLORESCENCE : solitary, appearing with the leaves. PEDUNCLE : usually short, erect in flower, deflexing in fruit. SPATHE : marcescent, constricted between tube and blade, tube convolute, blade much longer than tube, erect and gaping to spreading, or sometimes ± reflexed. SPADIX : sessile, shorter or subequal to spathe, female zone few-flowered, very short, separated from male by axis partly or completely covered with sterile flowers, sterile flowers either basal, central or at apex of sterile zone, male zone cylindric, sometimes with zone of sterile flowers above, appendix stipitate or not, erect, shorter or much longer than rest of spadix, cylindric, elongate-conoid to very long-subulate. FLOWERS : unisexual, perigone absent. MALE FLOWER : 1-2-androus, anthers subsessile, connective slender, sometimes elongated and prominent, thecae ovoid, dehiscing by apical pore or broad slit. POLLEN : inaperturate, spherical, medium-sized (mean 25 µm.), exine spinose. STERILE FLOWERS : spreading, somewhat decurved or suberect, long, slender and filiform to shorter and subulate. FEMALE FLOWER : gynoecia oriented vertically, ovary ellipsoid to obovoid, 1-locular, ovules 3-9 (or more), orthotropous, funicle short, placentae 2, apical and basal, stigma ± sessile, discoid-hemispheric, sometimes rather massive with central depression. BERRY : ovoid to ellipsoid, few-seeded. SEED : broadly ovoid to ellipsoid, apiculate, strophiolate, testa smooth to rugose, embryo axile, elongate, endosperm copious.

    Images

    Distribution

    Native to:

    India, Sri Lanka

    Theriophonum Blume appears in other Kew resources:

    First published in Rumphia 1: 127 (1837)

    Accepted by

    • 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
    • Royal Botanic Gardens, Kew 2008. World Checklist of Selected Plant Families.

    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