Limnanthaceae
Limnanthaceae is a small family restricted to North America. It traditionally counted two genera, Floerkea Willd. and Limnanthes R. Brown, and this seems to be confirmed by molecular data (Meyers & al. 2010). For some time it was believed to be part of the Geraniaceae family.
One of the genera, Limnanthes, is of some importance horticulturally.
Literature:
Meyers S.C. (2010) Evolutionary Relationships and an Investigation of Sympatric Speciation within Limnanthaceae. PhD dissertation, Oregon State University [available online at: http://ir.library.oregonstate.edu/xmlui/bitstream/handle/1957/16166/Stephen_Meyers_PhDthesis.pdf?sequence=1]
Meyers S.C., Liston A. & Meinke R. (2010) A Molecular Phylogeny of Limnanthes (Limnanthaceae) and Investigation of an Anomalous Limnanthes Population from California, U. S. A. Systematic Botany 35(3): 552-558.
Ornduff R. (1971) Systematic studies of Limnanthaceae. Madroño 21: 103-111.
Plotkin M.S. (1998) Phylogeny and Biogeography of Limnanthaceae. M.S. thesis. University of California, Davis.