Publications

Archibald, J. K., D. J. Crawford, A. Santos-Guerra, and M. E. Mort.  2006. The utility of automated analysis of inter-simple sequence repeat loci (ISSR) for resolving relationships in the Canary Island species of Tolpis (Asteraceae). Amer. J. Bot. 93: 1154-1162.

Chapman, S. S., J. M. Omernik, J. Freeouf, D. G. Huggins,  J. R. McCauley, C. C. Freeman, G. Steinauer, and R. Angelo. 2001. Ecoregions of Nebraska and Kansas. U.S. Environmental Protection Agency, Corvallis, OR.

Crawford, D. J., J. K. Archibald, D. Stoermer, M. E. Mort, J. K. Kelly, and A. Santos-Guerra. 2008. A test of Baker’s law: the radiation of Tolpis (Asteraceae) in the Canary Islands. Int. J. Pl. Sci. 169: 782-791.

Crawford, D. J., J. K. Archibald, M. E. Mort, and A. Santos-Guerra. 2009. Pollen fertility of synthetic intra- and interspecific F1 hybrids in Canary Island Tolpis (Asteraceae). Pl. Syst. Evol. 279:103-113. 

Crawford, D. J., J. K. Archibald, J. K. Kelly, M. E. Mort, and A. Santos-Guerra. 2010. Mixed mating in the “obligately outcrossing” Tolpis (Asteraceae) of the Canary Islands. Pl. Spec. Biol. 25:114-119.

Crawford, D. J., M. E. Mort, and J. K. Archibald. 2013. Tolpis santosii (Asteraceae: Cichorieae), a new species from La Palma, Canary Islands. Vieraea 41: 163-169.

Crawford, D. J., T. K. Lowrey, G. J. Anderson, G. Bernardello, A. Santos-Guerra, and T. F. Stuessy. 2009. Genetic diversity in the colonizing ancestors of Asteraceae endemic to oceanic islands: Baker’s law and polyploidy, pp. 139-151 In: V. A. Funk, A. Susanna, T. F. Stuessy & R. J. Bayer, eds. Systematics, Evolution and Biogeography of the Compositae. International Organization of Plant Taxonomy: Vienna.

Crawford, D. J., G. J. Anderson, and G. Bernardello. 2011. The reproductive biology of island plants, pp. 11-36 In:  D. Bramwell and J. Caujapé-Castells, eds., The Biology of Island Floras. Cambridge University Press: Cambridge.

Crawford, D. J., J. K. Archibald, M. E. Mort, and A. Santos-Guerra. 2006.  Allozyme variation within and divergence among species of Tolpis (Asteraceae-Lactuceae) in the Canary Islands: Systematic, evolutionary and biogeographical implications. Amer. J. Bot. 93: 656-664. 

Freeman, C. C.  Accepted.  Jamesia. In: Hydrangeaceae. Vol. 12. Flora of North America. Oxford University Press.

Freeman, C. C. Submitted.  Nuttallanthus. In: Plantaginaceae. Vol. 17. Flora of North America. Oxford University Press.