Phylogeny, diversity, and distribution in Exostema (Rubiaceae): implications of morphological and molecular analyses. McDowell, T. & B. Bremer. Pl. Syst. Evol. 212: 215-246. 1998.

 

Exostema (Persoon) Bonpland (Rubiaceae): Taxonomic history, nomenclature and subgeneric classification.” Opera Botanica Belgica: 7: 277-295. 1996.

 

"Syringantha coulteri (Hooker f.) T. McDowell, a new combination, and remarks on the relationships of the monotypic genus Syringantha Standley (Rubiaceae), Novon 6. 273-279. 1996.

 

Wind-stress: An experimental investigation into the structure-function relationship of leaf architecture. Levy, F., Hill, S. and T. McDowell. Amer. Biol. Teacher 63:124-127.