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Botany Newsletter 1989 Hamilton, Robert G. 1988. The significance of spore banks in natural populations of Athyrium pycrtocarport and A. thelypterioides. Amer. Fern J. 78: 96-104. Kauffman, G., J. C. Cavender and H. R Hohi. 1988. Polysphortdylium luridum, a new dictyostelid species with unique spores. Botanica Helvetica 98: 123-13 1.
Larson, L. A. 1988. Curiosity about biology Kendall-Hunt. Lloyd, R. M. 1988. Experimental studies on the probability of selfing by protandrous gametophytes. Amer. Fern J. 78: 1 1 7- 121. Mapes, G. K. and R. H. Mapes (Eds.). 1988. Regional geology arid paleontology of upper Paleozoic Hamilton quamj area in southeastem Kansas. Kansas Geol. Survey Guidebook Series 6. Mapes, G. K. and G. W. Rothwell. 1988. Diversity among Hamilton conifers. j G. Mapes and R. Mapes, thici, pp. 225-244. Mapes, G. K., G. A. Leisman and W. Gillespie. 1988. Plant megafossils from the Hartford Limestone (Virgiian-Upper Pennsylvanian) near Hamilton, Kansas. in G. Mapes and R. Mapes, thid. Mapes, G. K., G. W. Rothwell and M. T. Haworth. 1989. EvolutIon of seed dormancy. Nature 337: 645-646. Mitchell, J. P. N. S. Cohn and Z. Zhou. 1988. Localization of a nuclear protein during development in the pea seedling. Plant Science 58: 253-260. ,
Muenchow,G.E.andM.Grebus. 1989. The evolution of dloecy from distyly: reevaluation of the hypothesis of the loss of long-tongued pollinators. Amer. Nat. 133: 149-156. Rothwell, G. W. 1988. Upper Pennsylvanian Steubenvile coalball flora. Ohio J. Sd. 88: 61-64. Rothwell, G. W. 1988. Cordaltales, C. B. Beck (Ed.) Origin and evolution ofgymrtosperms. Columbia Univ. Press. pp. 273-297.
Rothwell, G. W. and G. K. Mapes. 1988. Vegetation of a Paleozoic conifer community. j G. Mapes and R. H. Mapes (Eds.) Regional geology and paleontology ofthe Upper Paleo zoic Hamilton quarry area in southeastern Kansas. Kansas Geol. Survey Guidebook Series6: 213-224. Rothwell, G. W. and S. E. Seheckler. 1988. Biology of ancestral gyrmnosperms fl C. B. Beck (Ed.), Origin and evolution ofgymnosperms. Columbia Univ. Press, pp. 85-134. Rothwell, 0. W. and Ruth A. Stockey. 1989. Fossil Ophioglossales in the Paleocene of western North America. Amer. J. Bot. 78: 637-644. Showalter, A. M. and J. E. Varner. 1989. Plant hydroxyproline-rich glycoproteins. P. K. Stumpf and E. E. Conn (Eds.), The biochem Lsty ofplants, Vol. 15, molecular biology. Academic Press, New York, pp. 485-520. Showalter, A. M., D. Rumeau, J. Zhou, S. G. Worst and J. E. Varner. 1989. Tomato hydroxyproline-rich glycoprotein genes: structure and expression in response to wounding. J. Cell Biochem. 13D: 326. Smith, I. K. and A. L. Lang. 1988. Translocation of sulfate in soybean. Plant Physiol. 86: 798-802. Smith, I. K., T. L. Vierheller and C. A. Thorne. 1988. Assay of glutathione reductase in crude tissue homogenates using DTNB. Anal. Biochem. 175: 408-417. Trivett, Mary L. and G. W. Rothwell. 1988. Diversity among Paleozoic Cordaitales: The vascular architecture of Mesoxylort birwne Baxter. Bot. Gaz. 149: 116-125. Trivett, Mary L. and G. W. Rothwell. 1988. Modeling the growth architecture of fossil plants: A Paleozoic Filicalean fern. Evolutionary Trends in Plants, 2: 25-29.
Ungar, I. A. 1988. Effects of the parental environ ment on the temperature requirements and salinity tolerance of Spergularia marina seeds. Bot. Gaz. 149: 432-436.