This site maps herbarium and iNaturalist occurrence records for Nevada's endemic, near-endemic, and disjunct vascular plant taxa - and if you toggle to show advanced filters, it can include non-endemic special status plant taxa, and/or watchlist plant taxa ranked as rare. It's intended as a supplement to Nevada Vascular Plants: an Annotated Checklist of the State's Botanical Diversity, by Arnold (Jerry) Tiehm & Jan Nachlinger — that book is the curatorial backbone for which taxa are included and how they're categorized, in terms of endemism. Information on taxa with special legal status comes from the Nevada Division of Natural Heritage, and information on rarity ranking comes from NatureServe.
Everything you see — the occurrence points, the county/region/section a point falls into, the conservation status badges — is computed ahead of time and baked into the site as data files, not queried live from GBIF or iNaturalist on the fly. The one exception is the Area Herbarium/iNat Search tool, which does query GBIF and iNaturalist live when you draw an area on the map.
That means the main dataset is a snapshot, not a real-time feed. It's refreshed roughly quarterly — new herbarium and iNaturalist records get pulled in, boundary computations get re-run, and the update goes out as a new version of the site. If something looks outdated or you spot a record that should be here but isn't, it may simply not have been picked up in the most recent refresh yet.
Data last refreshed: —
Tiehm, A. & Nachlinger, J. Nevada Vascular Plants: An Annotated Checklist of the State's
Botanical Diversity.
Nevada Division of Natural Heritage. Nevada Natural Heritage Program At-Risk Plant and Animal
Tracking List and Federal Special Status Species List. Nevada Department of
Conservation and Natural Resources, Carson City, NV. heritage.nv.gov
NatureServe. NatureServe Conservation Status Assessments. NatureServe, Arlington, VA.
natureserve.org
County, Physiographic Region/Section, and Named Place (e.g. Ash Meadows NWR) are computed from each occurrence point's actual coordinates, checked against real boundary data — not from a taxon-level description. A taxon's general range might be described as "Central Great Basin," but an individual outlier record for that taxon could genuinely sit somewhere else — these filters reflect the individual point, not the species as a whole.
Book Category is different: it's a taxon-level habitat/distribution descriptor straight from the book (things like "Cliff-dwelling" or "Disjunct" describe a pattern, not a specific checkable location), so it stays a per-taxon tag rather than a per-point spatial filter.
Coordinates, boundaries, and category assignments all carry some degree of real-world imprecision — from GPS accuracy on the original collection or observation, from digitizing hand-drawn boundary maps, and from occasional errors in the underlying source data. Records with clearly implausible coordinates (e.g. off the coast, or in another state entirely) are excluded rather than guessed at. Everything else is shown as-is; treat this as a research and exploration tool, not a survey-grade authority.
This site works as an installable, offline-capable web app. Use the "Download Offline Base Map" option in the panel before heading into the field with no signal — cached map tiles and data will still be available.
Unlike the rest of the site, this tool queries GBIF and iNaturalist live, so it isn't filtered through the same curation as the main dataset. That means results can include names that aren't actually compatible with Tiehm & Nachlinger's checklist — taxonomic synonyms, or taxa the book explicitly excludes. We hope to flag these automatically in a future update; for now, treat results from this tool as a live, unfiltered look at what's in GBIF/iNat for the area, not a checklist-verified list.
Whatever's currently visible under your active filters can be exported as GeoJSON, GPX, or CSV from the Export section of the panel — useful for loading a custom point set into Gaia GPS or another GPS app before a field trip.