Abstract
Carterella is described as a new genus based on Bouvardia alexanderae, endemic to Baja California Sur, Mexico. Closest relationships are to the Houstonia mucronata group, but qualitative differences in seed characters and striking quantitative differences in floral characters provide evidence for recognition of a new monotypic genus.
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Terrell, E.E. Carterella (Rubiaceae), new genus from Baja California, Mexico. Brittonia 39, 248–252 (1987). https://doi.org/10.2307/2807385
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DOI: https://doi.org/10.2307/2807385