Where Button weed has been recorded
GBIF occurrence records for Dictyosphaeria versluysii, mapped and tabulated by country.
1,288 georeferenced occurrence records with coordinates are published for Dictyosphaeria versluysii through GBIF, from 52 countries or marine areas. This page maps those records and lists where they come from. Occurrence records reflect where people have looked as well as where the species lives, so well-surveyed coastlines are over-represented.
- Georeferenced records
- 1,288
- Countries / areas
- 52
- Mapped locations
- 193
- Records sampled for the map
- 1,288
- Inland records omitted
- 52
- Gbif taxonkey
- 2644838
Countries and areas with the most records (GBIF)
United States of America — 368 records; Brazil — 337 records; Australia — 119 records; United States Minor Outlying Islands — 54 records; American Samoa — 43 records; Réunion — 43 records; French Southern Territories — 33 records; Indonesia — 30 records; Mexico — 29 records; Philippines — 21 records; Wallis and Futuna — 15 records; Kenya — 14 records; Tanzania, United Republic of — 14 records; Venezuela (Bolivarian Republic of) — 14 records; French Polynesia — 13 records.
Source: GBIF Occurrence Search (taxonKey 2644838) — https://www.gbif.org/occurrence/search?taxon_key=2644838&has_coordinate=true (records CC0 / CC BY). Accessed 2026-09-23.
Marine regions with a WoRMS distribution record
Kenyan Exclusive Economic Zone; Madagascar; Aldabra; Mauritian Exclusive Economic Zone; Mozambican Exclusive Economic Zone; Réunion Exclusive Economic Zone; Seychellois Exclusive Economic Zone; Somali Exclusive Economic Zone; South Africa (country); Tanzanian Exclusive Economic Zone; Gulf of Mexico; Indian Ocean.
Source: WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=214397 (CC BY 4.0). Accessed 2026-09-23.
How to read this map
The map plots a sample of 1,288 of the 1,288 records, deduplicated to a half-degree grid, so dense areas do not merge into one blob. The sample covers 52 of the 52 countries or areas with records; the areas absent from the sample hold 0 records in total.
52 records plotting inland were omitted: for a marine species those are almost always the holding institution's coordinates rather than a collection site.
Records show where the species has been observed and reported, not a modelled range.
Source: GBIF Occurrence Search (taxonKey 2644838) — https://www.gbif.org/occurrence/search?taxon_key=2644838&has_coordinate=true (records CC0 / CC BY); WoRMS distribution records (MarineRegions) — https://www.marinespecies.org/aphia.php?p=taxdetails&id=214397 (CC BY 4.0); Natural Earth 110m basemap — https://www.naturalearthdata.com/ (public domain). Accessed 2026-09-23.
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