1. Family: Araceae Juss.
    1. Ulearum Engl.

      1. This genus is accepted, and its native range is Peru to N. Brazil.

    [CATE]

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

    Habitat
    Tropical humid forest (“terra firme”); geophytes on forest floor.
    General Description
    Laticifers anastomosing. HABIT : small evergreen herbs, rhizome creeping horizontally just below the soil surface. LEAVES : 1-several, 1 marcescent cataphyll enclosing base of petiole. PETIOLE : sheath very short. BLADE : subreniform to broadly sagittate, often variegated; primary lateral veins arising from petiole insertion, forming a submarginal collective vein, 1-2 marginal veins also present, higher order venation reticulate. INFLORESCENCE : solitary. PEDUNCLE : slender, subequal to or longer than petiole, base enclosed by a single relatively long cataphyll. SPATHE : oblong-lanceolate, greenish, unconstricted, completely expanded, margins revolute, persistent and dark green in fruit. SPADIX : slender, subequal to spathe, female zone adnate to spathe, separated from male zone by a longer sterile zone, lower part of sterile zone naked or only sparsely covered with sterile flowers, upper part with short dense zone of staminodes, male zone short, composed of 6-7 whorls of stamens, terminal appendix digitiform, base composed of a few whorls of apically rounded staminodes, becoming smooth above. FLOWERS : unisexual, perigone absent. MALE FLOWER : apparently 1-androus, stamens sessile, subtruncate, connective ± broad, thecae ellipsoid to globose, dehiscing by apical pore. POLLEN : inaperturate, spherical, medium-sized (diam. 26-32 µm.), exine spinose. STERILE FLOWERS : depressed globose or cylindric; staminodes below male zone in 2-3 whorls, rounded apically. FEMALE FLOWER : gynoecium narrowly subcylindric, ovary 1-locular, ovule 1, anatropous, funicle short, placenta basal, style ± as thick as ovary, stigma discoid, as broad as style. BERRY : subcylindric to ellipsoid, stigmatic remnant persistent, 1-seeded, dark green and red-spotted. SEED : ellipsoid, testa thin, white, smooth, transparent, embryo ellipsoid, dark green with red spots externally, whitish internally, undifferentiated, endosperm absent.
    Distribution
    Peru, N. Brazil.
    Diagnostic
    Small evergreen, rhizomatous geophytes; leaf blade subreniform to broadly sagittate, often variegated, fine venation reticulate; peduncle equalling or longer than petiole, slender; spathe greenish, unconstricted, completely expanded; spadix female zone adnate to spathe; flowers unisexual, perigone absent. Differs from Filarum and Zomicarpella in having relatively thick, subcylindric terminal spadix appendix, stem a creeping rhizome, and 1-ovulate ovary.

    Images

    Distribution

    Native to:

    Brazil North, Ecuador, Peru

    Ulearum Engl. appears in other Kew resources:

    First published in Bot. Jahrb. Syst. 37: 95 (1905)

    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