Presented Papers and Posters

  1. Clark, Curtis. 1972. A comparison of the calls of two populations of pikas (Ochotona princeps). Southwestern Association of Naturalists, Annual Meeting.
  2. Clark, Curtis. 1972. Notes on the pollination ecology of two Oklahoma thistles. Oklahoma Academy of Sciences, 61st Annual Meeting.
  3. Clark, Curtis, Karen W. Bowers, Phillip Hall, and W. Ethen Perkins. 1973. Fluorescence patterns in selected genera of yellow-rayed Oklahoma composites. Southwestern Association of Naturalists, Annual Meeting.
  4. Clark, Curtis. 1973. Pollen predation in Lolium perenne var. italicum and Sorghum halepense. Oklahoma Academy of Science, 62nd Annual Meeting.
  5. Perkins, Mary C., and Curtis Clark. 1973. Notes on the floral biology of Indigofera miniata. Oklahoma Academy of Science, 62nd Annual Meeting (presented by Curtis Clark).
  6. Clark, Curtis. 1974. Correlations between the distribution of Lesquerella ovalifolia (Cruciferae) and geological formations in southern Oklahoma. Southwestern Association of Naturalists, Annual Meeting.
  7. Clark, Curtis. 1975. Ecogeographic races of Lesquerella engelmannii (Cruciferae). American Society of Plant Taxonomists, Annual Meeting.
  8. Clark, Curtis. 1975. Ultraviolet reflection and fluorescence of flowers: Applications and techniques. California Botanical Society, Graduate Student Meetings.
  9. Clark, Curtis. 1976. The identity of Eschscholzia mexicana (Papaveraceae): A preliminary report. California Botanical Society, Graduate Student Meetings (award for best paper).
  10. Clark, Curtis. 1977. Evolution of the desert species of Eschscholzia (Papaveraceae). California Botanical Society, Graduate Student Meetings.
  11. Clark, Curtis. 1978. Evolution of the desert species of Eschscholzia (Papaveraceae). American Society of Plant Taxonomists, Annual Meeting.
  12. Clark, Curtis, and D.W. Kyhos. 1978. Encelia X laciniata (E. ventorum X E. palmeri ): interspecific hybridization in Baja California. California Botanical Society, Graduate Student Meetings.
  13. Clark, Curtis, and D.W. Kyhos. 1979. Origin of species by hybridization in Encelia (Compositae: Heliantheae). American Society of Plant Taxonomists, Annual Meeting.
  14. Clark, Curtis. 1980. Eschscholzia (Papaveraceae): An evolutionary conspectus. Pacific Division AAAS, 61st Annual Meeting.
  15. Clark, Curtis, Wm. C. Thompson, and Donald W. Kyhos. 1980. Comparative morphology of the leaf trichomes of Encelia (Compositae: Heliantheae). Botanical Society of America, Annual Meeting (poster).
  16. Clark, Curtis, Donald W. Kyhos, and Wm. C. Thompson. 1980. Evidence for the origin of diploid species in Encelia (Compositae: Heliantheae) by hybridization. Second International Congress of Systematic and Evolutionary Biology.
  17. Clark, Curtis. 1982. Applications of block clustering in ecology and systematics. Pacific Division AAAS, 63rd Annual Meeting.
  18. Clark, Curtis. 1982. Hybridization in Encelia (Compositae: Heliantheae) and its effect on phylogenetic analysis. American Society of Plant Taxonomists, Annual Meeting.
  19. Clark, Curtis. 1982. Relationships between experimental and phylogenetic systematics: An overview. American Society of Plant Taxonomists, Annual Meeting.
  20. Clark, Curtis, and Nancy C. Clark. 1983. Use of trichome morphology in studies of the phylogeny of Encelia (Asteraceae). Institute for Cellular and Molecular Biology (California State Polytechnic University, Pomona), Fellows Symposium.
  21. Clark, Curtis. 1983. Systematics and biogeography of the Encelia frutescens alliance (Asteraceae: Heliantheae). American Society of Plant Taxonomists, Annual Meeting.
  22. Clark, Curtis. 1983. Herbarium label-writing on a main-frame computer. Botanical Society of America, Annual Meeting (poster).
  23. Clark, Curtis. 1983. Label-writing on mainframe computers. Herbarium Curators Meeting, October 14, Missouri Botanical Garden.
  24. Clark, Curtis. 1984. Selection against hybrid recombinants as an isolating mechanism: the syngameon reassessed. American Society of Plant Taxonomists, Annual Meeting.
  25. Proksch, Peter, and Curtis Clark. 1984. New chromenes and benzofurans from the Encelia alliance (Asteraceae: Heliantheae) and their systematic significance. American Society of Plant Taxonomists, Annual Meeting (presented by Curtis Clark).
  26. Clark, Curtis. 1986. The phylogeny of Encelia (Asteraceae: Heliantheae). American Society of Plant Taxonomists, Annual Meeting.
  27. Clark, Curtis. 1988. A phylogenetic view of climatic tolerance in the Encelia alliance (Asteraceae: Heliantheae). American Society of Plant Taxonomists, Annual Meeting.
  28. Clark, Curtis, Jonathan N. Baskin, and Jaime A. Tres. 1988. Linear measurement in biology: Comparison of computer-assisted with manual techniques. American Institute of Biological Sciences, Annual Meeting.
  29. Clark, Curtis. 1989. Preparation of herbarium labels in lower division flora courses. Association of Biologists for Computing, Winter 1989 Meeting.
  30. Clark, Curtis. 1989. A free word-processing program for computer application classes. Association of Biologists for Computing, Winter 1989 Meeting.
  31. Clark, Curtis, and Mark Faull. 1989. Reevaluation of the Eschscholzia minutiflora autopolyploid complex (Papaveraceae). American Society of Plant Taxonomists, Annual Meeting.
  32. Clark, Curtis. 1995. Reconciling phenotypic and ITS sequence phylogenies in the Encelia alliance (Asteraceae: Heliantheae) to study character evolution. American Society of Plant Taxonomists, Annual Meeting.
  33. Clark, Curtis, and Gerard J. Allan. 1997. Hybrid speciation with external barriers: Encelia (Asteraceae: Heliantheae), a case study. American Society of Plant Taxonomists, Annual Meeting (poster, 1.40 Mb .pdf).
  34. Clark, Curtis, Rashmi Pant, and Gerard J. Allan. 1998. Hybrid speciation in Encelia virginensis (Asteraceae): Evidence from multiple ITS chimeras. Society for Systematic Biology, Annual Meeting (poster [1.26 Mb .pdf], presented by the coauthors).
  35. Carpenter, Kevin J., and Curtis Clark. 1999. Comparative morphology of disk floret trichomes of Encelia (Asteraceae). XVI International Botanical Congress, St. Louis, MO. (poster, 826 kb .pdf)
  36. Tulig, Melissa, and Curtis Clark. 2000. Morphological Variation in Mimulus section Diplacus (Scrophulariaceae). American Society of Plant Taxonomists, Annual Meeting (poster [680 kb .pdf], presented by the first author).
  37. Koukol, Scott R., and Curtis Clark. 2001. Comparative anatomy of the leaves and stems of Encelia (Asteraceae: Heliantheae). American Society of Plant Taxonomists, Annual Meeting (poster [2.8 Mb .pdf], presented by the first author).