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Mating systems of two Bombacaceous trees of a neotropical moist forest. Oecologia. 82:501-506. Schnabel, A. and J. L. Hamrick. 1990. Nonrandom associations between sex and 6-phosphogluconate dehydrogenase isozyme genotypes in Gleditsia triacanthos. J. Heredity 81:230-233. Hamrick, J. L., M. D. Loveless and D. A. Murawski. 1990. Genetic diversity in tropical trees. Plant Science Tomorrow 1:6-7. Murawski: D.A. and J. L. Hamrick. 1990. Local genetic and clonal structure in the tropical terrestrial bromeliad, Aechmea magdalenae. Am. J. Bot. 1201-1208. Schnabel, A. and J. L. Hamrick. 1990. The organization of genetic diversity within and among populations of Gleditsia triacanthos L. Am. J. Bot. 77:1060-1069. Surles, S. E., J. Arnold, A. Schnabel, J. L. Hamrick and B. C. Bongarten. 1990. Genetic relatedness in open-pollinated families of two leguminous tree species. Robinia pseudoacacia L. and Gleditsia triacanthos L. Theo. Appl. Genet. 80:49-56. Hamrick, J. L. and D. A. Murawski. 1990. The breeding structure of tropical tree populations. Pl. Sp. Biol. 5:157-165. Arnold, M. L., J. L. Hamrick and B. D. Bennett. 1990. Allozyme variation in Louisiana Irises: A test for introgression and hybrid speciation. Heredity 65:297-306. Hamrick, J. L. and D. A. Murawski. 1991. Levels of allozyme diversity in populations of uncommon tropical tree species. J. Trop. Ecol. 7:395-399. Gibson, J. P. and J. L. Hamrick. 1991. Genetic diversity and structure in Pinus pungens (Table Mountain Pine) populations. Canad. J. For. Res. 21:635-642. Murawski, D. A. and J. L. Hamrick. 1991. The effect of the density of flowering individuals on the mating systems of nine tropical tree species. Heredity 67:167-174. Chung, M. G., J. L. Hamrick, S. B. Jones and G. S. Derda. 1991. Isozyme variation within and among populations of Hosta (Liliaceae/Funkiaceae) in Korea. Systematic Botany 16:667-684. Schnabel, A., R. H. Laushman and J. L. Hamrick. 1991. Comparative genetic structure of two co-occurring tree species, Maclura pomifera (Moraceae) and Gleditsia triacanthos (Leguminosae). Heredity 67:357-364. Gibson, J. P. and J. L. Hamrick. 1991. Heterogeneity in pollen allele frequencies among cones, whorls and trees of Table Mountain Pine (Pinus pungens Lambert). Am. J. Bot. 78:1244-1251. Chung, M. G., S. B. Jones and J. L. Hamrick. 1991. Morphometric and isozyme analysis of the genus Hosta Tratl. (Liliaceae/Funhiaceae) in Korea. Plant Species Biology 6:55-69. Godt, M. J. W. and J. L. Hamrick. 1991. Genetic variation in Lathyrus latifolius. Am. J. Bot. 78:1163-1171. Godt, M. J. W. and J. L. Hamrick. 1991. Estimates of outcrossing rates in Lathyrus latifolius populations. Genome. 34:988-992. Thomson, J. D., E. A. Herre, J. L. Hamrick, and J. Stone. 1991. Allofusion in strangler fig trees and its implications for tropical conservation. Science. 254:1214-1216. Parker, K. C. and J. L. Hamrick. 1992. Genetic diversity and clonal structure in a columnar cactus. Am. J. Bot. 79:86-96. Sherman-Broyles, S. L., S. B. Broyles and J. L. Hamrick. 1992. Geographic distribution of allozyme variation in Ulmus crassifolia Nut. Syst. Bot. 17:33-41. Murawski, D. A. and J. L. Hamrick. 1992. The mating system of Cavanillesia platanifolia under extremes of flowering tree density: A test of predictions. Biotropica. 24:99-101. Hamrick, J. L., M. J. W. Godt and S. L. Sherman-Broyles. 1992. Factors influencing levels of genetic diversity in woody plant species. New Forests. 6:95-124. Hamrick, J. L., A. Schnabel and P. V. Wells. 1994. Distributions of genetic diversity within and among populations of Great Basin Conifers. Pp. 147-161. In Natural History of the Colorado Plateau and Great Basin. Harper, K. T., L. L. St. Clair, K. H. Thorne and W. W. Hess (eds.). Univ. Colorado Press, Niwot, CO. Sherman-Broyles, S. L., J. P. Gibson, J. L. Hamrick, M. A. Bucher and M. J. Gibson. 1992. Comparisons of allozyme diversity among rare and widespread Rhus species. Syst. Bot. 17:551-559. Murawski, D. A. and J. L. Hamrick. 1992. Mating system and phenology of Ceiba pentandra (Bombacaceae) in central Panama. J. Heredity. 83:401-404. Hamrick, J. L., D. A. Murawski and J. D. Nason. 1993. The influence of seed dispersal mechanisms on the genetic structure of tropical tree populations. Vegetatio. 107/108:281-297. Wheeler, N. C., W. T. Adams and J. L. Hamrick. 1993. Pollen distribution in wind-pollinated seed orchards. pp. 25-31. In Bramlett, D. L., G. R. Askew, T. D. Blush, F. E. Bridgewater and J. B. Jett (eds.). Advances in Pollen Management. USDA For. Ser. Agr. Handbook 698. Godt, M. J. W. and J. L. Hamrick. 1993. Patterns and levels of pollen-mediated gene flow in Lathyrus latifolius. Evolution. 47:98-110. Hamrick, J. L., Wm. J. Platt and M. Hessing. 1993. Genetic variation in longleaf pine. Pp. 193-203. In Hermann, S. M. (ed). The longleaf pine ecosystem: ecology, restoration and management. Proc. Tall Timbers Fire Ecology Conf. 18, Tall Timbers Research Station, Tallahassee, FL. Arnold, M. L., J. L. Hamrick and B. D. Bennett. 1993. Reproductive isolation in Iris: Differential fertilization and natural hybridization. J. Heredity. 84:13-16. Wyatt, R., S. B. Broyles, J. L. Hamrick and A. Stoneburner. 1993. Systematic relationships within Gelsemium (Loganiaceae): Evidence from isozymes and cladistics. Syst. Bot. 18:345-355. Berg, E. E. and J. L. Hamrick. 1993. Regional genetic variation in Turkey Oak, Quercus laevis Walt. Canad. J. For. Res. 23:1270-1274. Hamrick, J. L., M. J. W. Godt and S. L. Sherman-Broyles. 1995. Gene flow among plant populations: Evidence from genetic markers. Pp. 215-232 In Hoch, P. C. and A. G. Stephenson (eds) Experimental and Molecular Approaches to Plant Biosystematics. Missouri Botanical Garden Press, S. Louis. Schnabel, A., J. L. Hamrick and P. V. Wells. 1993. Influence of Quaternary history on the population genetic structure of Douglas-fir (Pseudotsuga menziesii) in the Great Basin. Can. J. For. Res. 23: 1900-1906. Godt, M. J. W. and J. L. Hamrick. 1993. Genetic diversity and population structure in Tradescantia hirsuticaulis (Commelinaceae), a rare plant species. Am. J. Bot. 80:959-966. Berg, E. E. and J. L. Hamrick. 1993. Spatial and genetic structure of two sandhills oaks: Quercus laevis Walter and Quercus margeretta Ashe (Fagaceae). Am. J. Bot. 81:7-14.