Notes on Drosera self-Incompatibility:
Chen, L., James, S. H. & Stace, H. M. (1997) Self-incompatibility, seed abortion and clonality in the breeding systems of several Western Australian Drosera species (Droseraceae). Austral. J. Bot. 45:191–201. (Detailed study of selected species.)
Lowrie, A. & J. G. Conran. (2007) A revision of the Drosera omissa/D. nitidula complex (Droseraceae) from south-west Western Australia. Taxon 56(2):533–544. (Contains notations as to SI/SC for species complex.)
Gibson, Robert (1999) Drosera arcturi in Tasmania and a comparison with Drosera regia. Carniv. Pl. Newslett. 28(3):76-80 (
) (Observations on pollination of D. arcturi in nature that are compatible with selfing.)
Gibson, Robert (2002) Drosera indica from Narrabri, New South Wales. Carniv. Pl. Newslett. 31(1):20-24. (
) (Report on a sexually dimorphic population of D. indica.)
Observations by Greg Bourke and Ivan Snyder indicate D. adelae, D. prolifera and D. schizandra are dichogamous but seed set is poor with selfed plants.
Observations by Andreas Fleischmann indicates D. stenopetala is self-compatible and some D. indica populations are self-incompatible.
Based on numerous observations reported on Internet forums it appears D. hamiltonii is self-incompatible. The plants have large showy flowers typical of SI species and there are no reports of getting seeds from selfed flowers.
Further reading on self-Incompatibility evolution:
Barrett, S. C. H. (2002) Evolution of sex: The evolution of plant sexual diversity. Nature Reviews Genetics 3:274-284.
Igic B., Kohn J. R. (2001) Evolutionary relationships among self-incompatibility RNases. Proceedings of the National Academy of Sciences, USA 98: 13167–13171.
Igic B., L. Bohs, and J. R. Kohn. (2004) Historical inferences from the self-incompatibility locus. New Phytologist 161:97-105.
Igic B., L. Bohs, and J. R. Kohn. (2006) Ancient polymorphism reveals unidirectional breeding system transitions. Proceedings of the National Academy of Sciences 103:1359-1363.
Igic, B., W. A. Smith, K. A. Robertson, B. A. Schaal and J. R. Kohn. (2007) Studies of self-incompatibility in wild tomatoes: I. S-allele diversity in Solanum chilense Dun. (Solanaceae). Heredity 99, 553–561.
Igic, B, R. Lande and J. R. Kohn. (2008) Loss of Self-incompatibility and its Evolutionary Consequences. Int. J. Plant Sci. 169(1):93–104.
Goldberg, E. E., J. R. Kohn, R. Lande, K. A. Robertson, S. A. Smith, B. Igic. (2010) Species Selection Maintains Self-Incompatibility. Science 330:493-495.