Araceae

Aglaodorum Schott

First published in Gen. Aroid.: 58 (1858)
This genus is accepted
The native range of this genus is S. Indo-China to W. Malesia.

Descriptions

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

General Description
HABIT : evergreen herbs, rhizomatous, aerenchymatous stem much-branched, creeping. LEAVES : several to many. PETIOLE : terete, sheath short. BLADE : oblanceolate to oblong, thick; midrib very thick, primary lateral veins pinnate, weakly differentiated, higher order venation parallel-pinnate. INFLORESCENCE : solitary. PEDUNCLE : long, subequal to petiole, erect in fruit. SPATHE : oblong, cuspidate, convolute, erect. SPADIX : stipitate, a little shorter than spathe, female zone very short with a single whorl of flowers, male zone subcylindric, fertile to apex. FLOWERS : unisexual, perigone absent. MALE FLOWER : stamens short, prismatic, filaments distinct, connective thickened, thecae oblong, adjacent or opposite, dehiscing by apical pore. POLLEN : inaperturate, ellipsoid, large (mean 59 µm.), exine apparently psilate or verruculate. FEMALE FLOWER : gynoecium surrounded by whorl of 1-3 shorter prismatic staminodes, ovary 1-2-locular, ovule 1 per locule, anatropous, funicle very short, placenta parietal in 1-locular ovaries, stigma broad, discoid, 4-lobed, concave at centre. BERRY : obovoid to ellipsoid, large, pericarp very thick, green. SEED : large, ellipsoid, testa thin, smooth, embryo large, plumule well-developed, endosperm absent.
Diagnostic
A creeping rhizomatous helophyte, with pinnate primary lateral veins and spadix with contiguous male and female zones. Differs from Aglaonema in having an inflorescence with a long peduncle, female flowers in a single whorl, a repent stem, and parietal placentation.
Distribution
S. Vietnam, W. Malesia.
Habitat
Tropical open swamps, especially freshwater tidal zones and brackish water, often growing with Nypa fruticans and Cryptocoryne ciliata; creeping rhizomatous helophyte.
[CATE]

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 Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0