A5077263298- Plant Diversity and Evolution
- Genetic diversity and population structure
- Plant Pathogens and Fungal Diseases
- Plant and animal studies
- Fern and Epiphyte Biology
- Plant and Fungal Species Descriptions
- Plant Taxonomy and Phylogenetics
- Botanical Research and Applications
- Ecology and Vegetation Dynamics Studies
- Botany and Plant Ecology Studies
- Chromosomal and Genetic Variations
- Plant Parasitism and Resistance
- Botany, Ecology, and Taxonomy Studies
- Plant and Biological Electrophysiology Studies
- Botany and Geology in Latin America and Caribbean
University of Wisconsin–Green Bay
2023-2024
University of Wisconsin–Milwaukee
2011-2018
Fossil leaves of Menispermaceae were previously described from the Paleocene Colombia. Because strong homoplasy leaf characters, fossils could not be placed more specifically within recognized clades, and additional data needed to specify intrafamilial paleogeographic relationships during Paleocene.Fossil endocarps collected Cerrejón Formation, recently discovered Bogotá flora, Wyoming (∼60 Ma). We surveyed endocarp morphology almost all extant genera, conducted character optimization, a...
Abstract— To explore the taxonomic status, phylogenetic patterns, and character evolution of various groups within Papaveraceae s. l. (Pteridophylloideae, Papaveroideae, Hypecoideae, Fumarioideae), two data sets were created analyzed using Bayesian inference, maximum likelihood, parsimony methods: 1) a Ranunculales set for 82 genera representing all major families order three chloroplast DNA regions (atpB, rbcL, matK) nuclear 26S ribosomal DNA, 2) an expanded sampling family (27 genera, 40...
• Premise of the study: This work surveys endocarp morphology Menispermaceae in context a well‐supported molecular phylogeny. The study is important since menispermaceous endocarps appear often fossil record and indicate presence wet forest ecosystem. Methods: Three chloroplast regions were used to derive phylogenies for 53 genera 60 species. Endocarps 47 92 species dissected morphological characters scored. Photographs key features are presented. We superimposed our matrix onto phylogeny...
Abstract Premise The western North American fern genus Pentagramma (Pteridaceae) is characterized by complex patterns of ploidy variation, an understanding which critical to comprehending both the evolutionary processes within and its current diversity. Methods We undertook a cytogeographic study across range genus, using combination chromosome counts flow cytometry infer level. Bioclimatic variables elevation were used compare niches. Results found that diploids tetraploids are common...
Unrecognized variation in ploidy level can lead to an underestimation of species richness and a misleading delineation geographic range. Caltha leptosepala (Ranunculaceae) comprises complex hexaploids (6x), rare nonaploids (9x), dodecaploids (12x), all with unknown distributions. We delineate the distribution contact zones cytotypes, investigate morphologies cytotypes subspecies, discuss biogeography evolutionary history polyploid complex.Using cytologically determined specimens as...
Abstract Aim In order to understand how a montane polyploid species complex responded Cenozoic mountain uplift and climate change, we reconstructed the biogeographic history of subalpine marshmarigold complex, including Caltha biflora , chionophila leptosepala . Phylogenies at multiple taxonomic levels were used estimate timing divergence, allopolyploid formation migration patterns, identify Last Glacial Maximum ( LGM ) refugia recolonization routes. Location Western North America. Methods A...
Relationships among the major subclades in fern family Pteridaceae have proven difficult to resolve. Here, we examine backbone of this large and heterogeneous lineage using both phylotranscriptomic methods a more focused, curated approach. We find that Pteridoideae Parkerioideae are together sister rest Cryptogrammoideae is Vittarioideae plus Cheilanthoideae. independent support from our analyses, published cytological data, genomic distributions substitutions per site for several...
The Caltha leptosepala species complex (Ranunculaceae) is taxonomically unresolved, with authors of various regional floras recognizing different names and numbers species. Integrating molecular, morphological, cytological, geographic data, we describe three in the complex, restoring two names, C. biflora chionophila, addition to leptosepala. Based on chloroplast nuclear ribosomal phylogenies, illustrate key morphological synapomorphies for species, assess usefulness previously used...