G. Chomicki

The Origin And Speciation Of Orchids

This study reconstructs the phylogeny of orchids using genomic data and infers their geographic origin and speciation patterns, finding their origin in Laurasia and recent speciation in Central America.

The origins and drivers of Neotropical diversity

The paper evaluates four evolutionary scenarios for Neotropical diversification using 150 phylogenies, finding that most clades show increasing diversity over time, while plants and tetrapods exhibit different diversification patterns.

Archaeogenomics of a ~2,100-year-old Egyptian leaf provides a new timestamp on date palm domestication

The paper analyzes an ancient date palm leaf to determine the timing of gene flow from wild relatives to domesticated date palms, finding hybridization occurred at least 2,100 years ago.

Hundreds of nuclear and plastid loci yield insights into orchid relationships

This study uses nuclear and plastid gene data to analyze orchid phylogenetic relationships, finding incongruence between nuclear and plastid trees and higher informativeness in nuclear genes.

A 3500-year-old leaf from a Pharaonic tomb reveals that New Kingdom Egyptians were cultivating domesticated watermelon

The paper analyzes a 3500-year-old watermelon leaf from a Pharaonic tomb to determine the domestication origin of watermelon, finding it was cultivated by New Kingdom Egyptians.

Experimental signal dissection and method sensitivity analyses reaffirm the potential of fossils and morphology in the resolution of the relationship of angiosperms and Gnetales

This study analyzes morphological datasets to resolve the phylogenetic relationship between angiosperms and Gnetales, finding that long branch attraction explains the morphological grouping of angiosperms and Gnetales, while molecular data support a closer relationship between Gnetales and conifers.

From tree tops to the ground: reversals to terrestrial habit in Galeandra orchids (Epidendroideae: Catasetinae)

This study investigates the reversal to terrestrial habit in Galeandra orchids, linking it to aridification and changes in pollination strategies.

Multiple Geographical Origins of Environmental Sex Determination enhanced the diversification of Darwins Favourite Orchids

The paper investigates whether environmental sex determination (ESD) in orchids is linked to increased diversification rates by analyzing phylogenetic data from Neotropical Catasetinae.

Recent origin of Neotropical orchids in the world’s richest plant biodiversity hotspot

This study investigates the origin and diversification of Neotropical orchids in the Andes, finding most lineages originated in the last 15 million years and diversification correlates with Andean orogeny.