Current Appointments & Affiliations
Professor Emeritus of Biology
·
2025 - Present
Biology,
Trinity College of Arts & Sciences
Associate of the Duke Initiative for Science & Society
·
2017 - Present
Duke Science & Society,
University Initiatives & Academic Support Units
Recent Publications
Corrigendum and Addendum to: “A phylogenetically informed generic reclassification of the hemionitid ferns (Pteridaceae: Cheilanthoideae)”( Taxon, (2025), 74, (260–291), 10.1002/tax.13314)
Journal Article Taxon · April 1, 2026 Here we report on four separate nomenclatural issues that emerged after publication of our recent research article “A phylogenetically informed generic reclassification of the hemionitid ferns (Pteridaceae: Cheilanthoideae)” by Schuettpelz & al. (in Taxon ... Full text CiteBoechera sierraensis: a newly discovered apomictic species from the Sierra Nevada with exceptional stress tolerance
Journal Article Plant Systematics and Evolution · April 1, 2026 This study introduces a new species, Boechera sierraensis, recently discovered in the Sierra Nevada of California. Previous research has shown that this taxon possesses exceptional tolerance to environmental stressors, including heat, drought, and high lig ... Full text CiteMicrosatellite, Hyb-Seq, and morphological studies confirm the enigmatic mustard Boechera tiehmii as an intergeneric hybrid.
Journal Article American journal of botany · December 2025 PremiseThe mustard genus Boechera (Brassicaceae) is notorious for rampant intra- and interclade hybridization, which has produced a complex reticulate network of apomictic diploid, triploid, and tetraploid hybrids. A recent hypothesis suggested th ... Full text CiteRecent Grants
Digitization TCN: Collaborative Research: The Pteridological Collections Consortium: An integrative approach to pteridophyte diversity over the last 420 million years
ResearchCo-Principal Investigator · Awarded by University of North Carolina - Chapel Hill · 2018 - 2022DISSERTATION RESEARCH: Evolution and Function of Farina in the Desiccation-tolerant Notholaenid Ferns (Pteridaceae)
Inst. Training Prgm or CMEPrincipal Investigator · Awarded by National Science Foundation · 2017 - 2022Oceans Apart: Assessing the roles of Vicariance and Long-distance Dispersal in the Widely Disjunct Fern Genus Cheilanthes (Pteridaceae)
Inst. Training Prgm or CMEPrincipal Investigator · Awarded by National Geographic Society · 2019 - 2019View All Grants
Education
Duke University ·
1995
Ph.D.
University of Guelph (Canada) ·
1981
M.S.
McGill University (Canada) ·
1976
B.S.