References
Gould, K.R., and R.K. Jansen. 1999. Taxonomy and phylogeny of a Gulf coast disjunct group of Spigelia (Loganiaceae sensu lato). Lundellia 2: 1-13. Google Scholar
Gould, K.R., and R.K. Jansen. 1999. Taxonomy and phylogeny of a Gulf coast disjunct group of Spigelia (Loganiaceae sensu lato). Lundellia 2: 1-13. Google Scholar