Williams, JH and C Brown. Submitted. Pollen has higher water content when dispersed in a tricellular state than in a bicellular state. Acta Botanica Brasileira  TBA!

Wallace, S and Williams, JH. 2017. Evolutionary origins of pectin methylesterase genes associated with novel aspects of angiosperm pollen tube walls. Biochemical and Biophysical Research Communications http://dx.doi.org/10.1016/j.bbrc.2017.04.027

Bucksch, A., many others, JH Williams, and DH Chitwood. Morphological plant modeling: Unleashing geometric and topological potential within the plant sciences. Frontiers in Plant Science 8:900 https://doi.org/10.3389/fpls.2017.00900

Williams, JH and SJ Mazer. 2016. Pollen - tiny and ephemeral but not forgotten: New ideas on their ecology and evolution. American Journal of Botany 103: 365-374. Link           **Introduction to Special Issue**

Williams, JH, JA Edwards and AJ Ramsey. 2016. Economy, efficiency and the evolution of pollen tube growth rates. American Journal of Botany 103: 471 – 483. Link

Williams, JH, ML Taylor and BC O'Meara. 2014. Repeated evolution of tricellular (and bicellular) pollen. American Journal of Botany 110: 559-571. Link

Williams, JH. 2012. Pollen tube growth rates and the diversification of flowering plant reproductive cycles. International Journal of Plant Sciences 173:649-661. Link

Williams, JH. 2012. The evolution of pollen germination timing in flowering plants: Austrobaileya scandens (Austrobaileyaceae). AoB Plants DOI: 10.1093/aobpla/pls010. Link            ** Editor's choice (2013)**

Taylor, ML and JH Williams. 2012. Pollen tube development in two species of Trithuria (Hydatellaceae) with contrasting breeding systems. Sexual Plant Reproduction 25:83-96. Link

Abercrombie, JM, O'Meara, BC Moffatt, AR and JH Williams. 2011. Developmental evolution of flowering plant pollen tube cell walls: callose synthase (CalS) gene expression patterns. EvoDevo 2:14. Link           **Highly accessed**

Taylor, ML, Macfarlane, TD and JH Williams. 2010. Reproductive ecology of the basal angiosperm Trithuria submersa (Hydatellaceae. Annals of Botany 106: 909-920. Link

Williams, JH, RT McNeilage, MT Lettre and ML Taylor. 2010. Pollen tube growth and the pollen tube pathway of Nymphaea odorata (Nymphaeaceae). Botanical Journal of the Linnean Society 162: 581-593. Link

Taylor, ML and JH Williams. 2009. Consequences of shifts in pollination syndrome for post-pollination biology in an ancient aquatic family. International Journal of Plant Sciences 170(5):584–598.   Link

JP Bryant, TP Clausen, RK Swihart, MT Stevens, SM Landhäusser, CD Hawkins, S Carrière, AP Kirilenko, AM Veitch, RA Popko, DT Cleland, JH Williams, W Jakubas, MR Carlson, KL Lehmkhul, M Cebrian, TF Paragi, PM Picone, JE Moore, EC Packee, TT Malone. 2009. Fire drives transcontinental variation in tree birch defense against browsing by snowshoe hares. American Naturalist 174: 13-23.   Link

Williams, JH. 2009. Developmental evolution of the progamic phase: Amborella trichopoda (Amborellaceae). American Journal of Botany 96: 144-165.   Link

Thien, LB, Bernhardt, P, Devall, MS, Chen, Z-D, Luo, Y-B, Fan, J-H, Yuan, L-C, and JH Williams. 2009. The pollination biology of basal angiosperms (ANITA grade). American Journal of Botany 96: 166-182.   Link

Williams, JH. 2008. Novelties of the flowering plant pollen tube underlie diversification of a key life history stage. Proceedings of the National Academy of Sciences, USA 105: 11259-11263.   Link         **Top 100 Science stories of 2008 (Discovery magazine)**

Arias, T and JH Williams. 2008. Embryology of Manekia naranjoana (Piperaceae) and the origin of tetrasporic, sixteen-nucleate female gametophytes in Piperales. American Journal of Botany 95(3): 272–285.   Link

Friedman, WE, EN Madrid and JH Williams. 2008. Origin of the fittest and survival of the fittest: relating female gametophyte development to endosperm genetics. International Journal of Plant Sciences 169(1): 79-92.   Link

Williams, JH and K Kennard. 2006. Microsatellite markers for the basal angiosperm Austrobaileya scandens. Molecular Ecology Notes 6(1): 201-203. Link

Friedman, WE and JH Williams. 2004. Developmental evolution of the sexual process in ancient flowering plant lineages. Plant Cell 16: S1-S15. Link

Williams, JH and WE Friedman. 2004. The four-celled female gametophyte of Illicium (Illiciaceae; Austrobaileyales): Implications for understanding the origin and early evolution of monocots, eudicots and eumagnoliids. American Journal of Botany 91(3): 332-351. Link

Friedman, WE, WN Gallup and JH Williams. 2003. Female gametophyte development in Kadsura : implications for Schisandraceae, Austrobaileyales, and the early evolution of flowering plants. International Journal of Plant Sciences 164(5): S293-S305. Link

Friedman, WE and JH Williams. 2003. Modularity of the angiosperm female gametophyte and its bearing on the early evolution of endosperm in flowering plants. Evolution 57(2):216-230. Link

Williams, JH, WJ Boecklen and DJ Howard. 2001. Reproductive processes in two oak ( Quercus ) contact zones with different levels of hybridization. Heredity 87(6): 680-690.   Link

Williams, JH, Jr. and ML Arnold. 2001. Sources of genetic structure in the woody perennial, Betula occidentalis. International Journal of Plant Sciences 162(5): 1097-1109.   Link

Godt, MJW, JL Hamrick, MA Edwards-Burke and JH Williams. 2001. Comparisons of genetic diversity in white spruce ( Picea glauca ) and jack pine ( Pinus banksiana ) seed orchards with natural populations. Canadian Journal of Forest Research 31(6): 943-949.   Link

Williams, JH, Jr., WE Friedman and ML Arnold. 1999. Developmental selection within the angiosperm style: using gamete DNA content to visualize interspecific pollen competition. Proceedings of the National Academy of Sciences, USA 96(16): 9201-9206.   Link

Arnold, ML, MR Bulger, JM Burke, AL Hempel and JH Williams.  1999. Natural hybridization - how low can you go (and still be important)?   Ecology 80(2): 371-381.   Link

Howard, DJ, RW Preszler, JH Williams, S Fenchel and WJ Boecklen. 1997. How discrete are oak species?   Insights from a hybrid zone between Quercus grisea and Q. gambelii. Evolution 51(3): 747-755.   Link