Curator, Deaver Herbarium
of Biological Sciences
(928) 523-7242 (herbarium)
Tina.Ayers at nau.edu
interests are in plant systematics, biogeography, and floristics.
I teach graduate courses in all of these topics, as well, although
only plant systematics is offered at the undergraduate level.
Currently, I am completing a monograph of the genus Lysipomia
(Campanulaceae), a genus of about 40 species endemic to the
Andean alpine tundra.
Additional projects include a molecular phylogenetic analysis
of Nemacladus, in collaboration with Dr. Nancy Morin, systematics
of Cyphocarpus, and systematics of Lobelia in Mexico and Central
America. All of these studies involve gathering molecular sequence
data from chloroplast or nuclear genomes, as well as collecting
macro- and micromorphological data. I am also interested in
florisitics, especially in the southwestern U.S. and northern
My recent graduate students have completed florisitic inventories
of two areas in northern Arizona/southern Utah funded by the
National Park Service. For more information on these studies
visit the Deaver Herbarium site.
T. 2000. Biogeography of Lysipomia: an illustration of species
richness adjacent to the Huancabamba Depression. Arnoldoa 6:13-27.
E. and T. J. Ayers. 2001. The Biodiversity and Distribution
of Exotic Vascular Plants and Animals in the Grand Canyon Region.
In: B. Tellman, Invasive Exotic Species in the Sonoran Region.
Univ. of Arizona Press, Tucson.
Romero, J., T. Ayers, and C. J. Johnson. 2002. Cladistics, bruchids
and host plants: evolutionary interactions in Amblycerus (Coleoptera:
Bruchidae). Ann. Ent. Soc. Amer.
Koopman, M. & T. Ayers. 2005.
Nectar spur evolution in the Mexican lobelias (Campanulaceae:
Lobelioideae). American Journal of Botany 92:558-562.