Williams, Norris - University of Florida

个人简介

Ph.D. Biology, University of Miami, 1971

研究领域

Systematics and evolution of Orchidaceae, with particular emphasis on Neotropical groups

近期论文

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Neubig, K.M., W. M. Whitten, N.H. Williams, M. A. Blanco, L. Endara, J. G. Burleigh, K. Silvera, J. C. Cushman, & M. W. Chase. 2012. Generic recircumscriptions of Oncidiinae (Orchidaceae: Cymbidieae) based on maximum likelihood analysis of combined DNA datasets. Botanical Journal of the Linnean Society 168: 117–146. Neubig, K.M., W. M. Whitten, M. A. Blanco, L. Endara, N.H. Williams, S. Koehler, & C. van den Berg. 2011. Preliminary molecular phylogenetics of Sobralia and relatives (Orchidaceae: Sobralieae). Proceedings of the Third Scientific Conference on Andean Orchids, Quito, Ecuador. Lankesteriana 11: 307-318. Silvera, K., K. M. Neubig, W. M. Whitten, N.H. Williams, K. Winter,& J. C. Cushman. 2010. Evolution along the crassulacean acid metabolism continuum. Functional Plant Biology 37: 995–1010. Gajdeczka, M. T., K. M. Neubig, W. S. Judd, W. M. Whitten, N.H. Williams, & K. D. Perkins. 2010. Phylogenetic analyses of the Gaylussacia frondosa complex (Ericaceae: Vaccinieae) based on molecular and morphological characters. J. Bot. Res. Inst. Texas 4(1): 245 – 260. 2010. Endara L., Williams N.,& León-Yánez S. 2009. Patrones de endemismo de orquídeas endémicas ecuatorianas: perspectivas y prioridades para la conservación. Pp 63-70, In: Pridgeon, A. M., Suarez, J.P. (eds) Proceedings of the Second Scientific Conference on Andean Orchids. Universidad Técnica Particular de Loja. Loja, Ecuador. Neubig, K., N.H. Williams, W.M. Whitten, & F. Pupulin. 2009. Molecular phylogenetics and the evolution of fruit and leaf morphology of Dichaea (Orchidaceae: Zygopetalinae). Annals of Botany 104: 457–467. Blanco, M. A. G. Carnevali, W. M. Whitten, R. Singer, S. Koehler,N.H. Williams, I. Ojeda, K. Neubig, & L. Endara. 2007. Generic realignments in Maxillariinae (Orchidaceae). Lankesteriana 7(3): 515-537. Williams, N.H., J. D. Ackerman, E. M. Fernández, & J. Llamacho. 2007. Antillanorchis: Its Rediscovery and Systematic Position. ORCHIDS 76: 856-858. Whitten, W.M., M. A. Blanco, N.H. Williams, S. Koehler, G. Carnevali, R. B. Singer, L. Endara, & K. M. Neubig. 2007. Molecular Phylogenetics of Maxillaria and Related Genera (Orchidaceae: Cymbidieae) Based Upon Combined Molecular Data Sets. American Journal of Botany 94: 1860-1889. Ionta G. M., W. S. Judd, N.H. Williams, & W. M. Whitten. 2007. Phylogenetic relationships in Rhexia (Melastomataceae): Evidence from DNA sequence data and morphology. International Journal of Plant Sciences 168: 1055-1066. Blanco, M. A, W. M. Whitten, D. S. Penneys, N.H. Williams, K. M. Neubig, & L. Endara. 2006. A Simple And Safe Method For Rapid Drying Of Plant Specimens Using Forced-Air Space Heaters. Selbyana27: 83-87. Zomlefer, W. B., Judd, W. S., Whitten, W. M., and Williams, N. H.2006. A synopsis of Melanthiaceae (Liliales), with focus on character evolution in tribe Melanthieae. In J. T. Columbus, E. A. Friar, J. M. Porter, L. M. Prince, and M. G. Simpson [eds.], Comparative biology of the monocotyledons: proceedings of the Third International Conference, pp. 566-578. Rancho Santa Ana Botanic Garden, Claremont, California, USA. Blanco, M. A., W. M. Whitten, N.H. Williams, and S. Koehler. 2006. Capillitial extrusion from fruits of Maxillaria nardoides (Orchidaceae: Maxillariinae). ORCHIDS (Lindleyana) 75: 685-691. Whitten, W.M., M. A. Blanco, and N.H. Williams. 2006. Recircumscription of Pityphyllum (Orchidaceae: Maxillariinae). ORCHIDS (Lindleyana) 75:452-456. Zomlefer, W.B., W.M. Whitten, N.H. Williams, and W.S. Judd. 2006. Infrageneric phylogeny of Schoenocaulon (Liliales: Melanthiaceae) with clarification of cryptic species based on ITS sequence data and geographical distribution. American Journal of Botany 93: 1178-1192. Carlsward,B.S., W. M. Whitten, N.H. Williams, and B. Bytebie 2006. Molecular phylogenetics of Vandeae (Orchidaceae) and the evolution of leaflessness. American Journal of Botany 93: 770-786. Williams, N.H., W.M. Whitten, and R. L. Dressler. 2005. Molecular systematics of Telipogon (Orchidaceae: Oncidiinae) and its allies: nuclear and plastid dna sequence data. Lankesteriana 5: 163-184. Whitten, W.M., N.H. Williams, R. L. Dressler, G. Gerlach, and F. Pupulin. 2005. Generic relationships of Zygopetalinae (Orchidaceae: Cymbidieae): combined molecular evidence.Lankesteriana 5: 87-108. Damián Loayza, M., N.H. Williams, and W M. Whitten. 2005. Phragmipedium kovachii: Molecular systematics of a new world orchid. Orchids 74: 132-137. Chase, M. W., L. Hanson, V. A. Albert, W. M. Whitten, and N.H. Williams. 2005. Life history evolution and genome size in subtribe Oncidiinae (Orchidaceae). Annals of Botany 95: 191-199. Dressler, R. L., Whitten, W. M., and N.H. Williams. 2004. Molecular systematics of Scaphyglottis and related genera (Orchidaceae).Brittonia 56: 58-66. Carlsward, B. S., W. M. Whitten, and N.H. Williams. 2003. Molecular phylogenetics of neotropical leafless Angraecinae (Orchidaceae): reevaluation of generic concepts. International Journal of Plant Sciences 164(1): 43-51. Koehler, S., N.H. Williams, W.M. Whitten, and M.E. do Amaral. 2002. Phylogeny of the Bifrenaria (Orchidaceae) complex based on morphology and sequence data from nuclear rDNA internal transcribed spacers (ITS) and chloroplast trnL-F region.International Journal of Plant Sciences 163:1055-1066. Williams, N.H., M. W. Chase, and W. M. Whitten. 2001. Phylogenetic position of Miltoniopsis, Caucaea, a new genus, Cyrtochiloides, and relationship of Oncidium phymatochilum based on nuclear and chloroplast dna sequence data (Orchidaceae: Oncidiinae). Lindleyana 16: 272-285. Zomlefer, W.B., N.H. Williams, W.M. Whitten, and W.S. Judd. 2001. Generic circumscription and relationships in the tribe Melanthieae (Liliales, Melanthiaceae), with emphasis on Zigadenus: evidence from ITS and trnL-F sequence data. American Journal of Botany 88: 1657-1669.