Mangonia Schott
  • Oesterr. Bot. Wochenbl. 7: 77 (1857) 


Notes: Distribution: S. Brazil to Uruguay

General Description

HABIT : seasonally dormant small herbs, tuber depressed-globose, deeply embedded in soil. LEAVES : few to several. PETIOLE : sheath long. BLADE : linear-elliptic or broadly ovate-elliptic to oblong-sagittate; primary lateral veins pinnate, few, running into margin, higher order venation reticulate. INFLORESCENCE : solitary, appearing before the leaves. PEDUNCLE : fairly long, mostly subterranean. SPATHE : erect, not constricted, lower part convolute into subcylindric tube, blade lanceolate to oblong, erect, gaping. SPADIX : subequal to spathe, female zone short, densely flowered, male zone less densely to laxly flowered especially in basal portion, either contiguous with female or separated by short ± naked axis, apical third to half of spadix more densely flowered and covered with sterile male flowers. FLOWERS : unisexual, perigone absent. MALE FLOWER : 2-5-androus, stamens with filaments connate, forming stipitate or sessile synandrium, anthers free, connective inconspicuous, thecae ellipsoid to globose, dehiscing by a narrow slit or apical pore. STERILE MALE FLOWERS : synandrode stipitate, consisting of 3-5 subcapitate, basally connate staminodes. POLLEN : inaperturate, ellipsoid, medium-sized (40 x 25 µm.), exine areolate to subrugulate. FEMALE FLOWER : gynoecium surrounded by whorl of 3-4 clavate-spathulate staminodes, ovary globose to ovoid, 2-3-locular, ovules 2 per locule, anatropous, funicle short, placenta axile in upper part of septum, style distinct, narrower than ovary, stigma 3-lobed or discoid, broader than style, concave centrally. BERRY : depressed-globose, in dense, subglobose to shortly cylindric infructescence. SEED : ellipsoid, somewhat compressed, testa smooth, embryo and endosperm unknown.

Diagnostic Description

Small, seasonally dormant tuberous herbs; leaf bade entire, linear to subsagittate, fine venation reticulate; spadix free, with a terminal appendix of synandrodes; flowers unisexual, perigone absent; ovules anatropus, 2 per locule.

Habitat

Subtropical gallery forest; geophytes, stony, well drained soils, flat areas, slopes near water courses.

Distribution

S. Brazil to Uruguay.

Distribution Map

 
  • Native distribution
Found in
  • Southern America Brazil Brazil South
  • Southern South America Uruguay

  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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