Filarum Nicolson
  • Brittonia 18: 348 (1967) 


Notes: Distribution: W. South America

General Description

HABIT : small herbs, tuber subglobose. LEAVES : few. PETIOLE : sheath short. BLADE : entire, cordate; primary lateral veins 3 per side, arising from petiole insertion, lower 2 pairs retrorse, all arcuately curving upwards forming submarginal collective vein, marginal vein distinct, higher order venation reticulate. INFLORESCENCE : 1-2 in each floral sympodium, appearing with leaves. PEDUNCLE : slender, longer or shorter than petiole. SPATHE : persistent, oblong-lanceolate, pale green. SPADIX : very slender, much longer than spathe, female zone adnate to spathe, few-flowered, male zone elongate, purple, sparsely flowered, with a very few sterile rudimentary flowers occurring above and below male zone, appendix slender, naked, elongate. FLOWERS : unisexual, perigone absent. MALE FLOWER : 1-androus, filaments very short, anthers nearly sessile, connective extremely long and drawn out into a filiform flexuose thread, thecae globose, dehiscing by apical pore. POLLEN : inaperturate, spherical, small to medium-sized (mean 21 µm.), exine spinose. FEMALE FLOWER : ovary oblong, 1-locular, ovule 1, anatropous, placenta basal, style attenuate, stigma small, subcapitate. BERRY : subglobose to globose, smooth, bearing the style and stigma remains. SEED : ellipsoid, testa thin, smooth, punctate, embryo ellipsoid, endosperm absent.

Diagnostic Description

Small tuberous geophyte; leaf blade entire, cordate, fine venation reticulate; spathe much shorter than spadix; flowers unisexual, perigone absent; female zone of spadix adnate to spathe, spadix with slender terminal appendix. Differs from Zomicarpella in having prolonged, thread-like stamen connectives, tuberous stems and 1-ovulate ovaries.

Habitat

Tropical humid forest; geophytes, forest floor.

Distribution

W. South America.

Distribution Map

 
  • Native distribution
Found in
  • Southern America Western South America Peru

  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 Bogner, J. Zomicarpella maculata (Araceae) rediscovered, with notes on the tribe Zomicarpeae. Willdenowia. Mitteilungen aus dem Botanischen Garten und Museum Berlin-Dahlem. Berlin-Dahlem 37, (2007).
  • 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
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
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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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