1. Family: Araceae Juss.
    1. Lysichiton Schott

      1. This genus is accepted, and its native range is Temp. E. Asia, Russian Far East, Alaska to W. U.S.A.

    [CATE]

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

    Habitat
    Temperate wetlands; helophytes, in swamps and wet woodlands.
    General Description
    HABIT : large herb with thick, hypogeal rhizome. LEAVES : numerous. PETIOLE : thick, flattened to deeply sulcate, sheath long. BLADE : becoming large, ovate-elliptic to ovate-oblong; primary lateral veins pinnate, running into inconspicuous marginal vein, higher order venation ± regularly transverse-reticulate between primaries. INFLORESCENCE : solitary, appearing just before or with the leaves in early spring. PEDUNCLE : absent, spadix supported on elongated stipe. SPATHE : marcescent, inserted at the point of attachment of spadix stipe to rhizome, cucullate to boat-shaped, lower part narrowly convolute and clasping spadix stipe, blade expanded, ovate, white or yellow. SPADIX : subcylindric, subacute at apex, stipe extremely elongated. FLOWERS : bisexual, perigoniate; tepals 4, cucullate, imbricate. STAMENS : 4, filaments oblong, flattened, connective slender, thecae ellipsoid, dehiscing by longitudinal slit. POLLEN : monosulcate, ellipsoid, medium-sized (mean 40 µm., range 38-43 µm.), exine reticulate. GYNOECIUM : elongate-ovoid, attenuate apically, ovary immersed in spadix axis, 2-locular or incompletely 2-locular, ovules 1-2 per locule, orthotropous, broad, conoid, funicle very short and thick, placenta axile, thick, style attenuate, longer than tepals, stigma discoid-hemispheric. BERRY : ellipsoid, mostly 2-seeded, green, decaying or stylar portion breaking off with perigone at maturity to expose seeds embedded in spadix axis. SEED : ± ellipsoid, somewhat compressed, testa smooth, embryo large, ellipsoid, endosperm nearly absent, present only as a single cell layer.
    Distribution
    Temp. E. Asia, Russian Far East, Alaska to W. U.S.A.
    Diagnostic
    Temperate helophytes with thick, hypogeal rhizome; leaf blade entire, ovate to oblong, fine venation reticulate; spathe blade white or yellow; spadix stipe very long, enclosed by lower part of spathe for most of its length down to attachment with rhizome; flowers bisexual, perigoniate, tepals free; ovary 2-locular, ovules 2 per locule, orthotropous, placenta axile.

    Images

    Distribution

    Native to:

    Alaska, Aleutian Is., British Columbia, California, Idaho, Japan, Kamchatka, Khabarovsk, Kuril Is., Montana, Oregon, Sakhalin, Washington

    Introduced into:

    Belgium, Denmark, Finland, Germany, Great Britain, Ireland, Netherlands, Norway, Sweden, Switzerland

    Lysichiton Schott appears in other Kew resources:

    First published in Oesterr. Bot. Wochenbl. 7: 62 (1857)

    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.

    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 2020. 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 2020. 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