Advertisement

Medusagynaceae

Medusagynaceae Engler & Gilg (1924), nom. cons.
  • W. C. Dickison
  • K. Kubitzki
Chapter
Part of the The Families and Genera of Vascular Plants book series (FAMILIES GENERA, volume 11)

Abstract

Small tree with a rounded crown. Leaves opposite, simple, elliptic or elliptic-oblong, glabrous, with a retuse apex and apical sinus, an attenuate base, and fine, widely spaced marginal glandular teeth, apical sinus contains a colleter on either side of the depression and a single one at the base of the cavity; stipules 0. Inflorescences lax, multiflowered, paniculate. Flowers regular, hypogynous, bisexual and male, the plants andromonoecious; staminate flowers without evidence of an abortive gynoecium; sepals 5, connate at the base, quincuncial in their distinct apices; petals 5, contort, at first spreading, later reflexed; stamens numerous, filaments distinct, slender, anthers basifixed, bithecate and tetrasporangiate, latrorse, dehiscing by slits; connective shortly protruding as apical extension; carpels numerous, 16–25, attached to central axis, each on its outer shoulder with a short stylodium and capitate stigma; ovules anatropous, epitropous, bitegmic, 2 per locule, on separate axile placentas, one ascending, the other descending; endosperm cellular. Fruit a septicidal capsule, each carpel separating acropetally from the central column along its entire margin, the dehisced carpels only maintaining a distal connection to the persistent columella. Seeds winged, with a thin layer of endosperm and a straight embryo.

Keywords

Staminate Flower Mucilage Cell Apical Sinus Apical Extension Capitate Stigma 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Selected Bibliography

  1. Baker, J.B. 1877. Flora of Mauritius and the Seychelles: a description of the flowering plants and ferns of those islands. London: L. Reeve & Co.Google Scholar
  2. Beauvisage, L. 1920. Contribution a l'étude anatomique de la famille des Ternstroemiacées. Doctoral diss., Univ. de Poitiers. Tours: E. Arrault et Cie.Google Scholar
  3. Dickison, W.C. 1990a. The morphology and relationships of Medusagyne (Medusagynaceae). Pl. Syst. Evol. 171: 27–55.CrossRefGoogle Scholar
  4. Dickison, W.C. 1990b. An additional note on the floral morphology and affinities of Medusagyne oppositifolia (Medusagynaceae). Brittonia 42: 191–196.CrossRefGoogle Scholar
  5. Doweld, B. 1998. On the phylogenetic relationships of Medusagyne (Medusagynaceae) as evidenced by the structure of its fruits and seeds. Bot. Zhurn. 83: 54–68.Google Scholar
  6. Fay, M.F., Swensen, S.M., Chase, M.W. 1997. Taxonomic affinities of Medusagyne oppositifolia. (Medusagynaceae). Kew Bull. 52: 111–120.CrossRefGoogle Scholar
  7. Hemsley, W.B. 1905. Medusagyne oppositifolia J. G. Baker. Hook. Icon. Plant. IV, 8: 1–3, pl. 2790.Google Scholar
  8. Hickey, L.J., Wolfe, J.A. 1975. The bases of angiosperm phylogeny: vegetative morphology. Ann. Missouri Bot. Gard. 62: 538–589.CrossRefGoogle Scholar
  9. Matthews, M.L. et al. 2012. See General References.Google Scholar
  10. Robertson, A., Wise, R., White, F. 1989. Medusagyne oppositifolia. Kew Mag. 6: 166–171.Google Scholar
  11. Soltis, D.E. et al. 2011. See General References.Google Scholar
  12. Wurdack, K.J., Davis, C.C. 2009. See General References.Google Scholar
  13. Xi, Z. et al. 2012. See General References.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Formerly at University of North CarolinaChapel HillUSA
  2. 2.Biozentrum Klein-FlottbekHamburgGermany

Personalised recommendations