Juan Carlos Villarreal

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Education

Ph.D. 2006–Present
University of Connecticut, Storrs, CT
Primary Advisor: Bernard Goffinet
Research Project: Phylogeny of the Nothoceros alliance (Anthocerotophyta) with emphasis in the phylogeography and clonal structure of the appalachian endemic Megaceros aenigmaticus

M.Sc. 2003–2005
Southern Illinois University Primary Advisor: Karen Renzaglia
Research Project: Hornwort-cyanobacteria symbiosis, chloroplast and sporophyte ultrastructure.

Dissertation research

Publications

Renzaglia, K.S., J.C. Villarreal & R.J. Duff. In press. New insights into morphology, anatomy and systematics of hornworts. In Bryophyte Biology II, J. Shaw & B. Goffinet (eds).

Villarreal, J.C., G. Hässel de & Menéndez & N. Salazar Allen. 2007. Nothoceros superbus (Dendrocerotaceae), a new species of hornwort from the Neotropics. The Bryologist, 110: 279-285.

Duff, R.J., J.C. Villarreal, D.C. Cargill & K.S. Renzaglia. 2007. Progress and challenges toward developing a phylogeny and classification of the hornworts. The Bryologist,1110: 214-243.

Villarreal, J.C. & K.S. Renzaglia. 2006. Sporophyte structure in the neotropical hornwort Phaeomegaceros fimbriatus: implications for phylogeny, taxonomy and character evolution. International Journal of Plant Sciences 167: 413-427.

Villarreal, J.C. & K.S. Renzaglia. 2006. Structure and development of Nostoc strands in Leiosporoceros dussii (Anthocerotophyta): a novel symbiosis in land plants. American Journal of Botany 93(5): 693-705. (Cover).

Dauphin, G.; T. Pócs; J. C. Villarreal & N. Salazar Allen. 2006. Nuevos Registros de Hepáticas y Anthocerotófitas para Panamá. Tropical Bryology 27: 73-85.

Cargill, D.C.; R.J. Duff, J.C. Villarreal & K.S. Renzaglia. 2005. Generic concepts in hornworts: historical review, contemporary insights and future directions. Australian Systematic Botany 18: 7-16.

Duff, R.J.; D.C. Cargill, J.C. Villarreal & K.S. Renzaglia. 2004. Phylogenetic relationships of the hornworts based on rbcL sequence data: novel relationships and new insights. Monographs in Systematic Botany from the Missouri Botanical Garden 98: 41-58.

Published abstracts

Villarreal, J.C. & K. S. Renzaglia. 2005. Structural innovations in the gametophyte of Leiosporoceros dussii (Steph.) Hässel: new insights into hornwort evolution. Botanical Society of America, National Congress, Austin, p. 30-31.

Villarreal, J. C.; R. J. Duff and K. S. Renzaglia. 2005. Anatomical and ultrastructural innovations in Leiosporoceros dussii (Steph.) Hässel. P. 450. XVII International Botanical Congress, Vienna, Austria, p. 450.

Villarreal, J.C.; S. Schuette, .J. Duff, D.C. Cargill & K.S. Renzaglia. 2004. New insights in hornwort character evolution. Botanical Society of America, National Congress, Utah, p. 41.

Villarreal, J.C.; S. Schuette, J. Witters, K.S. Renzaglia & W. Taylor. 2004. Comparative morphological and ultrastructural survey of hornwort spores. Botanical Society of America, Utah, p. 54.

Villarreal Aguilar, J.C. & N. Salazar Allen. 2002. Estudio preliminar de la morfología y distribución geográfica del género Megaceros en Panamá. In: Rangel, J.O., J. Aguirre C. & M.G. Andrade C. (eds). Libro de Resúmenes 8 vo Congreso Latinoamericano y Segundo Colombiano de Botánica, Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. P. 70.

Invited talks

Renzaglia, K.S., J.C. Villarreal, S.Schuette, J. Duckett & R. Ligrone. 2007. Evolution of the hornwort chloroplast unveiled. World Conference of Bryology, Malaysia. Invitation to Karen Sue Renzaglia

Villarreal, J.C. ; & K. S. Renzaglia. 2007 (May). Hornwort biology: Phylogeny, character evolution and symbiotic association with cyanobacteria. Department of Biology, University of New Mexico, Albuquerque, USA.

Villarreal, J.C. & K. S. Renzaglia. 2006. Innovaciones anatómicas y ultraestructurales en antocerotes Neotropicales: los géneros Leiosporoceros y Phaeomegaceros. IX Congreso Latinoamericano de Botánica-VII, Dominican Republic.

Fieldwork

Panama, Costa Rica, Venezuela (Merida), Republica Dominicana, Southern Appalachians (USA)

Teaching Experience

2001-2001 Neotropical Environments (McGill University, field course in Panama)

2004-2004 Plant diversity

2006-2007 BIOL 102. Introduction to Biology

2007-2007 BIOL 110. Introduction to Botany.