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Walter S. Judd

Distinguished Professor
Ph.D., Harvard University, 1978

378 Dickinson Hall

Research Interests

My research concerns the systematics and evolution of flowering plants, with specific interest in the Ericaceae and Melastomataceae, phylogenetic relationships within temperate/tropical family pairs, and the floras of the West Indies and southeastern U.S. I have conducted field work mainly in the southeastern United States, the Dominican Republic, Haiti, Jamaica, Puerto Rico, and the Virgin Islands. Currently, I am involved in taxonomic revisions of several Antillean clades of Miconieae (Melastomataceae), an investigation of the phylogeny of the Gaultherieae (Ericaceae), the treatment of several families for the Generic Flora of the Southeastern United States, and the production of an introductory textbook in plant systematics (Plant Systematics: A Phylogenetic Approach).

Research achievements include revisions of Agarista, Craibiodendron, Lyonia, Pieris, and subclades of Rhododendron (in the Ericaceae), and revisions of Miconia sect. Chaenopleura, and the Miconia desportesii complex (in the Melastomataceae).Other significant research includes published phylogenetic analyses of various clades within the Ericaceae and Melastomataceae.

Representative Publications

Waselkov, K. & W. S. Judd.2008. A phylogenetic analysis of Leucothoe s.l. (Ericaceae; tribe Gaultherieae) based on morphological characters.Brittonia 60 (in press).

Judd, W. S., J. D. Skean, T. Clase, & G. Ionta.2008.Taxonomic studies in the Miconieae (Melastomataceae). IX. Calycogonium formonense, a new species from the Massif de la Hotte, Haiti.Brittonia 60:265-270.

Judd, W. S., J. D. Skean, D. S. Penneys, & F. A. Michelangeli.2008.A new species of Henriettea (Melastomataceae) from the Sierra de Baoruco, the Dominican Republic.Brittonia 60: 217-227.

Goldenberg, R., D. S. Penneys, F. Almeda, W. S. Judd, & F. A. Michelangeli.2008. Phylogeny of Miconia (Melastomataceae): initial insights into broad patterns of diversification in a large Neotropical genus. Int. J. Plant Sci. 169: 963-979.

Judd, W. S., G. M. Ionta, T. Clase, & J. D. Skean.2008.Tetrazygia paralongicollis (Miconieae, Melastomataceae), a new species from the Sierra de Baoruco and Sierra Martin Garcia, Dominican Republic.J. Bot. Res. Inst. Texas 2: 35-40.

Michelangeli, F. A., W. S. Judd, D. S. Penneys, J. D. Skean, E. R. Becquer, R. Goldenberg, & C. V. Martin.2008.Multiple events of dispersal and radiation of the tribe Miconieae (Melastomataceae) in the Caribbean.Bot. Rev. 74: 53-77.

Zomlefer, W. B. & W. S. Judd.2008. Two new species of Schoenocaulon (Liliales: Melanthiaceae) from Mexico supported by ITS sequence data.Syst. Bot. 33: 117-124.

Judd, W. S., D. E. Soltis, P. S. Soltis, & G. Ionta.2007.Tolmiea diplomenziesii: a new species from the Pacific Northwest and the diploid sister taxon of the autotetraploid T. menziesii (Saxifragaceae).Brittonia 59: 217-225.

Cantino, P. D., J. A. Doyle, S. W. Graham, W. S. Judd, R. G. Olmstead, D. E. Soltis, P. S. Soltis, & M. J. Donoghue.2007. Towards a phylogenetic nomenclature of Tracheophyta.Taxon 56: 822-846.

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. Int. J. Plant Sci. 168: 1855-1066.

Morris, A. B., C. D. Bell, J. W. Clayton, W. S. Judd, D. E. Soltis, & P. S. Soltis. 2007.Phylogeny and divergence time estimation in Illicium with implications for New World biogeography.Syst. Bot. 32: 236-249.

Judd, W. S. 2007.Revision of Miconia sect. Chaenopleura (Miconieae, Melastomataceae) in the Greater Antilles.Systematic Botany Monographs 81: 1-235.

Soltis, D. E., P. S. Soltis, D. Schemske, J. Hancock, J. Thompson, B. Husband, & W. S. Judd. 2007. Autopolyploidy and sympatric speciation in angiosperms: have we grossly underestimated the number of species? Taxon 56: 13-30.

Manchester, S. R., W. S. Judd, & B. Handley.2006.Foliage and fruits of early poplars (Salicaceae: Populus) from the Eocene of Utah, Colorado, and Wyoming. Int. J. Plant Sci. 167: 897-908.

Zomlefer, W. B., W. M. Whitten, N.H. Williams, & W. S. Judd.2006.Infrageneric phylogeny of Schoenocaulon (Liliales: Melanthiaceae) with clarification of cryptic species based on ITS sequence data and geographical distributions.Amer. J. Bot. 93: 1178-1192.

Penneys, D. S., & W. S. Judd. 2005. A systematic revision and cladistic analysis of Charianthus (Miconieae: Melastomataceae) using morphological and molecular characters. Systematic Botany 30: 559-584.

Guerrero, A., W. S. Judd, & A. Morris.2004. A new species of Illicium subsection Parviflora (Illiciaceae) from the Massif de la Hotte, Haiti.Brittonia 56: 346-352.

Judd, W. S. & D. S. Penneys.2004. Taxonomic studies in the Miconieae (Melastomataceae). VIII.A revision of the species of the Miconia desportesii complex on Hispaniola. Rhodora 106: 124-147.

Judd, W. S., D. S. Penneys, & J. D. Skean.2004. Rediscovery of Ossaea alloeotricha, an endemic of the high-elevation Massif de la Hotte, Haiti, and its transfer to Miconia (Melastomataceae: Miconieae).Brittonia 56: 159-165.

Boucher, L. D., S. R. Manchester, & W. S. Judd.2003.An extinct genus of Salicaceae based on twigs with attached flowers, fruits, and foliage from the Eocene Green River Formation of Utah and Colorado.Amer. J. Bot. 90: 1389-1399.

Penneys, D. S. & W. S. Judd.2003. The resurrection and lectotypification of Tetrazygia fadyenii (Melastomataceae: Miconieae): A hummingbird pollinated treelet endemic to Jamaica. Sida 20: 877-884.

Zomlefer, W. B., W. M. Whitten, N. H. Williams, & W. S. Judd.2003.An overview of Veratrum s.l. (Liliales: Melanthiaceae) and an infrageneric phylogeny based on ITS sequence data. Amer. J. Bot. 90: 250-269.

Judd, W. S. 2003.The genera of Ruscaceae in the southeastern United States. Harvard Papers in Botany 7: 93-149.

Kron, K. A., W. S. Judd, P. F. Stevens, D. M. Crayn, A. A. Anderberg, P. A. Gadek, C. J. Quinn, & J. L. Luteyn.2002. A phylogenetic classification of the Ericaceae: Molecular and morphological evidence.Bot. Rev. 68: 335-423.

Zomlefer, W. B. & W. S. Judd.2002. Resurrection of segregates of the polyphyletic genus Zigadenus s.l. (Liliales: Melanthiaceae) and resulting new combinations.Novon 12: 299-308.

Zomlefer, W. B., N. H. Williams, W. M. Whitten, & 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.Amer. J. Bot. 88: 1657-1669.

Judd, W. S. 2001.The Asparagaceae in the southeastern United States.Harvard Papers in Botany 6: 223-244.

Judd, W. S. 2000.The Hypoxidaceae in the southeastern United States.Harvard Papers in Botany 5: 79-98.

Kron, K. A., W. S. Judd, and D. M. Crayn. 1999. Phylogenetic analyses of the Andromedeae (Ericaceae subfam. Vaccinioideae).Amer. J. Bot. 86:1290-1300.

Judd, W. S., C. S. Campbell, E. A. Kellog, S. P. F Sterens. 1999. Plant Systematics: A phylogenetic approach. Sinauer Assoc., Sunderland MA. xvi +464 pp. (text with CD-ROM) ISBN 0-8793-404-9.

Judd, W.S. 1999. The genera of Chenopodiaceae in the Southeastern United States. Harvard papers in Botany No. 4:365-416.

Judd, W. S. 1998. The Smilacaceae in the Southeastern United States. Harvard Papers in Botany. No. 3: 148-169.

Kron, K. A. & W. S. Judd. 1997. Systematics of the Lyonia group (Andromedeae, Ericaceae) and the use of species as terminals in higher-level cladistic analyses. Syst. Bot. 22: 479-492.

Judd, W. S. & S. R. Manchester. 1997. Circumscription of Malvaceae (Malvales) as determined by a preliminary cladistic analysis of morphological, anatomical, palynological, and chemical characters. Brittonia 49: 384-405.

Judd, W. S. 1997. The Asphodelaceae in the Southeastern United States. Harvard Papers in Botany No. 11: 109-123.

Judd, W. S. 1997. The Flacourtiaceae in the Southeastern United States. Harvard Papers in Botany No. 10: 65-79. 1997.

Luteyn, J. L., W. S. Judd, S. P. Vander Kloet, L. J. Dorr, G. D. Wallace, K. A. Kron, P. F. Stevens, S. E. Clemants. 1996. Ericaceae of the Southeastern United States. Castanea 61: 101-144.

Judd, W. S. 1996. The Pittosporaceae in the southeastern United States. Harvard Papers in Botany No. 8: 15-26.

Judd, W. S., V. T. Salzman, J. D. Skean, Jr. 1995. Taxonomic studies in the Miconieae (Melastomataceae). VII. Miconia howardii, a new species from Hispaniola. Brittonia 47: 414-421.

Judd, W. S. 1995. Kalmia, Lyonia, Agarista, Pieris. In: J. Luteyn, ed. Ericaceae Part II--The Superior-ovaried Genera. Flora Neotropica, vol. 66. New York Botanical Garden, N.Y.

Judd, W. S. & K. A. Kron. 1995. A revision of Rhododendron. VI. Subgenus Pentanthera (sections Sciadorhodion, Rhodora, and Viscidula). Edinburgh J. Bot. 52(1): 1-54.

Judd, W. S. & J. D. Skean, Jr. 1994. Taxonomic studies in the Miconieae (Melastomataceae). VI. Miconia santanana, a new species from Hispaniola. Brittonia 46: 99-104.

Judd, W. S., R. W. Sanders, & M. J. Donoghue. 1994. Angiosperm family pairs: preliminary phylogenetic analyses. Harvard Papers in Botany 5: 1-51.

Judd, W. S. & E. Karpook. 1993 [1994]. Taxonomic studies in the Miconieae (Melastomataceae). VI. Miconia stenobotrys, circumscription and relationships. Rhodora 95: 325-341.

Judd, W. S., W. L. Stern, & V. I. Cheadle. 1993. Phylogenetic position of Apostasia and Neuwiedia (Orchidaceae). Bot. J. Linn. Soc. 113: 87-94.

Judd, W. S. & K. A. Kron. 1993. Circumscription of Ericaceae (Ericales) as determined by preliminary cladistic analyses based on morphological, anatomical, and embryological features. Brittonia 45: 99-114.

Judd, W. S. & J. D. Skean, Jr. 1991. Taxonomic studies in the Miconieae (Melastomataceae). IV. Generic realignments among terminal-flowered taxa. Bull. of the Florida Museum of Natural History, Biol. Sci. 36(2): 25-84.

Kron, K. A. & W. S. Judd. 1990. Phylogenetic relationships within the Rhodoreae (Ericaceae) with specific comments on the placement of Ledum. Systematic Botany 15: 57-68.

Judd, W. S. 1989. Taxonomic studies in the Miconieae (Melastomataceae). III. Cladistic analysis of axillary-flowered taxa. Annals Missouri Bot. Garden 76: 476-495.

Huck, R., W. S. Judd, M. Whitten, J. D. Skean, Jr., R. P. Wunderlin, & K. R. DeLaney. 1989. A new Dicerandra (Labiatae) from the Lake Wales Ridge of Florida with a cladistic analysis and discussion of endemism. Systematic Botany 14: 197-213.

Judd, W. S. & R. S. Beaman. 1988. Taxonomic studies in the Miconieae (Melastomataceae). II. Systematics of the Miconia subcompressa complex of Hispaniola, including the description of two new species. Brittonia 40: 368-391.

Judd, W. S. & J. D. Skean, Jr. 1987. Two new species of Meriania (Melastomataceae) from Hispaniola. Systematic Botany 12: 374-380.

Judd, W. S. 1986. A taxonomic revision of Craibiodendron (Ericaceae). Jour. Arnold Arbor. 67: 441-469.

Judd, W. S. 1986. Taxonomic placement of Calcogonium squamulosum (Melastomataceae: Miconieae). Brittonia 38: 238-242.

Judd, W. S. 1986. Taxonomic studies in the Miconieae (Melastomataceae). I. Variation in inflorescence position. Brittonia 38: 150-161.

Judd, W. S. 1984. A taxonomic revision of Agarista (Ericaceae). Jour. Arnold Arbor. 65: 255-342.

Judd, W. S. 1982. A taxonomic revision of Pieris (Ericaceae). Jour. Arnold Arbor. 63: 103-144.

Judd, W. S. 1981. A monograph of Lyonia (Ericaceae). Jour. Arnold Arbor. 62: 63-209, 315-436.

Current Graduate Students

NameEmailResearch Interest
Paul Corogin pcorogin@ufl.eduSystematics of vascular plants; biology of the genus Sideroxylon in North America
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