Synandrospadix Engl.
  • Bot. Jahrb. Syst. 4: 61 (1883) 


Notes: Distribution: Peru to N. Argentina

General Description

HABIT : seasonally dormant herbs, tuber subglobose. LEAVES : several. PETIOLE : fairly long, with darker longitudinal striations, sheath long. BLADE : ovate-cordate to -emarginate, somewhat glaucous; primary lateral veins pinnate, running into inconspicuous marginal vein, higher order venation reticulate. INFLORESCENCE : 1, rarely 2 in each floral sympodium, appearing with leaves. PEDUNCLE : short. SPATHE : ovate-lanceolate, boat-shaped, unconstricted, persistent, convolute at base, gaping above, light green outside with dark longitudinal lines, inside purple and roughened, smelling of fungi. SPADIX : much shorter than spathe, subcylindric, obtuse, female zone partly or completely adnate to spathe, ± laxly flowered, separated from male zone by a few bisexual or sterile flowers, male zone longer, fertile to apex. FLOWERS : unisexual, perigone absent. MALE FLOWER : synandrium 4-5-androus, long-stipitate, stipe elongate-conoid, whorl of anthers apical or shortly overtopped by central pistillode, thecae oblong-elliptic, dehiscing by longitudinal slit. POLLEN : purple to pinkish, inaperturate, spherical to subspheroidal, medium-sized (mean 49 µm.), exine spinose. BISEXUAL FLOWERS : as for female but with whorl of 4-5 free stamens with flattened elongate-triangular filaments and thecae dehiscing as above. FEMALE FLOWER : gynoecium surrounded by 3-5 free, elongate-triangular, flattened, acute staminodes, ovary ovoid-globose, 3-5-locular, ovules 1 per locule, orthotropous, funicle distinct, placenta axile-basal, style attenuate, stigma discoid-subcapitate, slightly 3-5-lobed. BERRY : ± subglobose, 3-5- furrowed, 3-5-seeded, style persistent. SEED : rather large, ovoid to obnapiform, testa ± rough, embryo elongate, straight, endosperm copious.

Diagnostic Description

Seasonally dormant tuberous geophytes; leaves several; leaf blade ovate-cordate, fine venation reticulate; flowers unisexual, perigone absent; male flower a stipitate synandrium; female flowers surrounded by a whorl of free staminodes. Differs from Gorgonidium in entire, shallowly cordate leaf blade and synandria entirely connate with inconspicuous connectives.

Habitat

Subtropical dry thorn forest; geophytes in clearings or on stony ground in shade.

Distribution

Peru to N. Argentina.

Distribution Map

 
  • Native distribution
Found in
  • Southern America Southern South America Argentina Northwest
  • Paraguay
  • Western South America Bolivia
  • Peru

Synonyms

  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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