Spatial phylogenetics of the Vernonieae (Asteraceae) in North America

In North America, the tribe Vernonieae (Asteraceae) comprises 92 species distributed mainly in mountain ranges. Combining molecular data for 62 species and herbarium records (N=5424), spatial phylogenetics was used to identify regions of high phylodiversity, centers of endemism, and patterns of phylogenetic turnover in North America. The study region was divided into 1° latitude and longitude grid cells; four molecular markers (ndhF, trnL, rpl32-trnL, and ITS) were used to construct a phylogram and alpha phylodiversity indices were calculated (phylogenetic diversity and relative phylogenetic diversity) along with categorical analysis of neo- and paleo-endemism (CANAPE). Beta phylodiversity was examined using the PhyloβSimpson and PhyloβRWTurnover indices to determine major phyloregions. A randomization test of phylogenetic diversity revealed phylogenetic clustering in the north and south of North America, while overdispersion was concentrated in the south. Relative phylogenetic diversit..., North America was defined following Brummitt et al. (2001); thus, the study area includes Canada, the conterminous United States of America, and Mexico. Distribution data for 92 Vernonieae species from 20 genera were analyzed. Geographic data for Canada and the United States were obtained from the online databases BIEN (Maitner et al. 2017) and GBIF (2022). For Mexico, two public databases available in electronic format were consulted. The first is the National Biodiversity Information System (SNIB-REMIB) of the National Commission for the Knowledge and Use of Biodiversity (CONABIO 2024: www.snib.mx), which includes digital information from numerous herbaria both in Mexico and abroad. The second is the National Herbarium (MEXU) digital repository at the National Autonomous University of Mexico (MEXU-IBdata 2024: https://www.ibdata.abaco3.org). Only those records based on herbarium specimens were used. They are kept in around 100 herbaria., , # Spatial phylogenetics of the Vernonieae (Asteraceae) in North America

Dataset DOI: [https://doi.org/10.5061/dryad.v9s4mw75p](https://doi.org/10.5061/dryad.v9s4mw75p)

## Description of the data and file structure

### Files and variables

#### File: Vernonieae_North_America.csv

**Description:** Treated dataset of Vernonieae of North America 

##### Variables

* Name: Contains the names of North American species.
* Long: Contains longitude coordinates in decimal units.
* Lat: Contains latitude coordinates in decimal units.

##### Access information

Data was derived from the following sources:

* IBdata. 2024. Herbario Nacional de México (MEXU) IBUNAM. [https://ibdata.abaco2.org/web/](https://ibdata.abaco2.org/web/) (last accessed 7 November 2024).

- GBIF.org (2022) GBIF Occurrence Download [https://doi.org/10.15468/dl.vt2z4q](https://doi.org/10.15468/dl.vt2z4q) (Consulted June 2022).
- Maitner, B. S., B. Boyle, N. Casler, R. Condit, J. Donoghue, S. M. Durán, D. Guadarrama, C. E. Hi...,