Gomphrena rigida

{{Short description|Extinct species of flowering plant}}

{{Speciesbox

|image =

|status = EX

|status_system = IUCN3.1

|status_ref = {{cite iucn |author=Tye, A. |author2=Lau, B. |date=2014 |title=Blutaparon rigidum |volume=2014 |page=e.T39087A61481721 |doi=10.2305/IUCN.UK.2014-3.RLTS.T39087A61481721.en |access-date=3 April 2024}}

|genus = Gomphrena

|species = rigida

|authority = (B.L.Rob. & Greenm.) T.Ortuño & Borsch (2020)

|synonyms =

• Achyranthes rigida {{small|(B.L.Rob. & Greenm.) Standl. (1915)}}
• Alternanthera rigida {{small|B.L.Rob. & Greenm. (1895)}} (basionym)
• Blutaparon rigidum {{small|(B.L.Rob. & Greenm.) Mears (1982)}}
• Lithophila rigida {{small|(B.L.Rob. & Greenm.) Standl. (1915)}}
• Philoxerus rigidus {{small|(B.L.Rob. & Greenm.) Howell (1933)}}

|synonyms_ref = {{cite web|url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77215270-1|title=Gomphrena rigida (B.L.Rob. & Greenm.) T.Ortuño & Borsch|website=Plants of the World Online|access-date=3 April 2024}}

}}

Gomphrena rigida, sometimes known as the Galapagos amaranth, was a species of plant in the family Amaranthaceae. It was a shrub endemic to eastern Santiago Island the Galápagos Islands of Ecuador. It is now extinct. It was driven to extinction by over-grazing by introduced goats, and was last collected in 1908.