Supporting Organizations

Vitis girdiana

This project is a collaboration among the United States Botanic Garden, San Diego Botanic Garden, USDA ARS, Geospatial Centroid at Colorado State University, and NatureServe. We are all grateful for your time and consideration in this evaluation effort.

Vitis Home Page
All Vitis County Maps

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Listing of all occurrence records for all species
Listing of all USDA Plants and Bonap records

Supporting information on method and taxonomy

Taxonomic concept


Taxon : Vitis girdiana
Accepted Synonym(s) : NA
Excluded from concept : Vitis californica
NatureServe Concept Reference: Kartesz 1994
Relationship to Flora of North America: Equal
Taxonomic Notes: Vitis girdiana is distinct from Vitis californica according to phylogenetic data; however, the two species are suspected to intergrade or hybridize where their ranges overlap (Wada 2008). Vitis girdiana is also suspected to hybridize with the non-native V. vinifera (Wada 2008).
NatureServe Classification Status: Accepted/Standard
NatureServe Distribution: United States (NNR): AZ (SNR), CA (SNR), NV (SNR), UT (SNR)
NatureServe Explorer: https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.146835/Vitis_girdiana
This species is included in FNA : TRUE

Details on the map elements

County Level Features

All county level features report information that as aggregated to the county level. This include text reference to the county (state/county) and spatial point reference that occur within the county.

  • Counties with a record: This presence absence map shows a county as green if it has at least one record from any of the evaluated sources.
  • Sum of records within County: This layer depicts the total number of unique records of a species across all sources within a county.
  • Counties listed in USDA Plants and/or Bonap Only (No occurrence points) These counties only contain a reference from USDA Plants and/or BONAP. There are no identified iNaturalist, herbarium, or germplasm occurrences from these locations.
  • Counties with one or more Herbarium or Germplasm Occurrence: These counties have at least one herbarium and/or germplasm occurrence. There may also be additional records within this county(iNaturalist, USDA Plants, BONAP, NatureServe).
  • Counties with iNaturalist Observation only: These counties only have species observations from iNaturalist.

Occurrence Features

  • Germplasm Occurrences: Occurrence data with living specimens stored in a Genebank or Botanical Garden.
  • Herbarium Occurrences with web url: Occurrence data of herbarium specimens, which includes an url for the source herbarium data.
  • Herbarium Occurrences without web url: Occurrence data of herbarium specimens.
  • iNaturalist observation data: Research grade observations from iNaturalist.

General Methods

Gathering Data

Data was gathered at the Genus level from the following

public repositories - Seinet - Genesys - Wiews - GRIN - USDA Plants - Crop Wild Relative 2020 publication

Sourced through communication with data owners - 2023 Botanical Garden Survey – available in the full source data - BONAP - IUCN

Data Standardization and Taxonomy

data standardization : All data sets were altered to matched a standard data structure. The specific translation of data sets can be seen here.

Taxonomy: The full synonyms cross walk can be viewed here.

Assigning the State and County to each occurrence

When latitude and longitude data was used to assign the state/country when possible. If no latitude and longitude data was provided, the state and county names were pulled from the attribute data associated with the record. If a state or county name could not be assigned by either method the record was excluded from this analysis.

Flora of North America

If state level distribution information was provided for a given specific species, that information was used to filter the states in which counties are evaluated.

Map of County and Occurrence Records

Summary of Occurrence Data

This table includes all records used to generate the map.

Data summarized to each County

The table below displays additional attribute data for all the counties with known occurrences. Columns can be filtered and sorted. The following states are included in this FNA state designation: California

Data excluded by Flora of North America state filter

The above map and table includes all occurrence data that falls within the established state range defined by Flora of North America.

If the state range for a species was defined by Flora of North America all the occurrence records will be shown on the map and above table.

The table below shows the occurrence data that falls outside the established Flora of North America states.

The following States are included in the FNA description: California, Baja California