Podolasia N.E.Br.
  • Gard. Chron., n.s., 18: 70 (1882) 


Notes: Distribution: W. Malesia

General Description

HABIT : evergreen herbs, solitary or forming small clumps, rhizomatous, aerial stem erect to decumbent, internodes distinct, unarmed. LEAVES : several. PETIOLE : long, aculeate, spines either patent or pointing downwards, geniculate apically, sheath short. BLADE : unarmed, sagittate to hastate or almost tripartite, coriaceous, posterior divisions ± equalling anterior, sometimes longer; basal ribs well-developed, primary lateral veins mostly arising near petiole insertion, long-arcuate towards division apex and running into margin, higher order venation reticulate. INFLORESCENCE : solitary. PEDUNCLE : subequal to petiole and similar in appearance. SPATHE : ovate-lanceolate, fully expanded, persistent, red brown. SPADIX : shorter or equalling spathe, cylindric, stipitate, stipe basally adnate to spathe, flowering sequence basipetal. FLOWERS : bisexual, perigoniate; tepals 4-6, fornicate. STAMENS : 4-6, filaments free, oblong, flattened, connective slender, thecae ellipsoid, dehiscing by longitudinal slit. POLLEN : monosulcate, ellipsoid-oblong, small (mean 18 µm.), exine scabrate or verruculate, minutely foveolate between verruculae. GYNOECIUM : cylindric to obovoid, ovary 1-locular, ovule 1, anatropous, placenta parietal to subbasal, stigma discoid- hemispheric. BERRY : ovoid to ellipsoid, smooth, strongly exserted at maturity, very prominent and thicker than spadix, red. SEED : curved, ± spherical, testa thin, hard, smooth, dark brown, embryo curved, endosperm present but only as a few cell layers.

Diagnostic Description

Rhizomatous evergreen helophytes with short aerial stem; petiole with obvious spines, geniculate apically; leaf blade deeply sagittate to almost subtripartite; peduncle long, subequalling petiole; spathe ovate-lanceolate, fully expanded; spadix narrowly cylindric, stipitate; flowers bisexual, perigoniate. Differs from Cyrtosperma in petiole spines both straight and down-turned, aerial stem with distinct internodes and smooth, ± orbicular seeds to 7 mm in diameter.

Habitat

Tropical humid forest, usually peat swamp forest; helophyte, along streams.

Distribution

W. Malesia.

Distribution Map

 
  • Native distribution
Found in
  • Asia-Tropical Malesia Borneo
  • Malaya
  • Sumatera

Included Species

  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 Gardens, K.""Royal Bot World Checklist of Selected Plant Families. (2008).
  • 3 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
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • B 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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