Advertisement

Plant Systematics and Evolution

, Volume 159, Issue 1–2, pp 81–83 | Cite as

Distyly and incompatibility inVillarsia congestiflora (Menyanthaceae), with comparative remarks onV. capitata

  • Robert Ornduff
Article

Abstract

The Western Australian annual of restricted distribution,Villarsia congestiflora, has distylous flowers and pollen-size heteromorphism. Results of a crossing program indicate that this species is strongly self-incompatible, that crosses among individuals of the same morph produce little or no seed, and that intermorph crosses produce copious seed. The species shares a number of morphological and ecological traits withV. capitata, another distylous, self-incompatible annual species of Western Australia with a greater area of distribution. Artificial hybrids between the two, however, showed reduced pollen stainability. Both species combine a number of specialized morphological features with a breeding system that is primitive for the familyMenyanthaceae.

Key words

Angiosperms Menyanthaceae Villarsia Distyly incompatibility seed set 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Aston, H. I., 1969: The genusVillarsia (Menyanthaceae) in Australia. — Muelleria2, 3–63.Google Scholar
  2. Ornduff, R., 1982: Heterostyly and incompatibility inVillarsia capitata (Menyanthaceae). — Taxon31, 495–497.Google Scholar
  3. Marchant, N. G., Keighery, G. J., 1979: Poorly collected and presumably rare vascular plants of Western Australia. — King's Park Research Notes5, 1–103.Google Scholar
  4. Bohm, B. A., Nicholls, K. W., Ornduff, R., 1986: Flavonoids of theMenyanthaceae: intra- and interfamilial relationships. — Amer. J. Bot.73, 204–213.Google Scholar

Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Robert Ornduff
    • 1
  1. 1.Department of BotanyUniversity of CaliforniaBerkeleyUSA

Personalised recommendations