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Taxonomy and Phylogeny of a Gulf Coast Disjunct Group of Spigelia (Loganiaceae Sensu Lato)
Abstract. We reconstructed phylogenies of populations of three closely related species of Spigelia (Loganiaceae sensu lato) to test hypotheses about relationships and taxonomic boundaries. The…
Phylogeny and evolution of Symbolanthus and Wurdackanthus (Gentianaceae-helieae) in the Guayana highlands and Andes, based on ribosomal 5S-NTS sequences
Results indicate that Wurdackanthus is either paraphyletic to Symbolanthus or that W. argyrus is nested within a Symbolanhurst clade, and show that the genus may be a recently and rapidly diverging clade.
Three new species of Spigelia (Strychnaceae) from Mexico
- K. Gould
- Biology, Political ScienceBrittonia
- 1 October 1999
During a revisionary study of Spigelia, three new species from Mexico were discovered, two of which appear to be narrow endemics and one in the state of Guerrero, and the third is more widespread in Mexico and Guatemala.
Boreal Plant Species for Reclamation of Athabasca Oil Sands Disturbances - Updated December 2014
A NEW, DISJUNCT VARIETY OF SPIGELIA GENTIANOIDES (LOGANIACEAE) FROM BIBB COUNTY, ALABAMA
- K. Gould
Amelanchier alnifolia: saskatoon, service berry, June berry, shadbush, shadblow, indian pear, may cherry
Rubus arcticus ssp. acaulis: dwarf raspberry, arctic blackberry, arctic bramble
Lack of evolution in a leaf beetle that lives on two contrasting host plants
It is concluded that the beetle populations studied have not differentiated based on their host plants and may not have even adapted to the better host, which is counter to many other studies that have seen the differentiation of ecotypes and/or adaptive coordination of an herbivore's life cycle based on host plant differences.