Aglaodorum Schott
  • Gen. Aroid.: 58 (1858) 


Notes: Distribution: S. Indo-China to W. Malesia

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 Description

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.

Habitat

Tropical open swamps, especially freshwater tidal zones and brackish water, often growing with Nypa fruticans and Cryptocoryne ciliata; creeping rhizomatous helophyte.

Distribution

S. Vietnam, W. Malesia.

Distribution Map

 
  • Native distribution
Found in
  • Asia-Tropical Indo-China Cambodia
  • Thailand
  • Vietnam
  • Malesia Borneo
  • Malaya
  • Sumatera

  Bibliography

  • 1 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.
  • 2 Govaerts, R. (1995). World Checklist of Seed Plants 1(1, 2): 1-483, 1-529. MIM, Deurne.
  • 3 Gardens, K.""Royal Bot World Checklist of Selected Plant Families. (2008).
  • 4 Mayo, S.J., Bogner, J. & Boyce, P.C. The Genera of Araceae. (Royal Botanic Gardens Kew: 1997).

 Information From

CATE Araceae
http://araceae.e-monocot.org
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, 14 Dec 2011 . 17 Dec 2011.
  • A All Rights Reserved
  • B   http://creativecommons.org/licenses/by-nc-sa/3.0/
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • C Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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