Gomphrena rigida (B.L.Rob. & Greenm.) T.Ortuño & Borsch

Galápagos amaranth



Taxonomy & Nomenclature

Synonyms: Alternanthera rigida B.L.Rob. & Greenm. (basionym); Achyranthes rigida (B.L.Rob. & Greenm.) Standl.; Blutaparon rigidum (B.L.Rob. & Greenm.) Mears; Lithophila rigida (B.L.Rob. & Greenm.) Standl.; Philoxerus rigidus (B.L.Rob. & Greenm.) J.T.Howell


Conservation Status


Last record: 1905-1906

IUCN RedList status: Extinct



Santiago, Galápagos Islands, Ecuador


Biology & Ecology










Albani Rocchetti, G., Carta, A., Mondoni, A. et al. (2022). Selecting the best candidates for resurrecting extinct-in-the-wild plants from herbaria. Nature Plants 8: 1385-1393. [Supplementary Tables S1-S6]

Humphreys, Aelys M. et al. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. [Abstract] [Supplementary Dataset 1]

Lawesson, J.E., Adsersen, H. & Bentley, P. (1987). An updated and annotated checklist of the vascular plants of the Galapagos islands: 1-74. Aarhus, Denmark.

León-Yánez, S. Valencia, R., N. Pitman, L. Endara, C. Ulloa Ulloa & H. Navarrete (2011) Libro rojo de las plantas endémicas del Ecuador. 2 da. Edición. Publicaciones del Herbario QCA, Pontificia Universidad Católica del Ecuador, Quito. Pp. 957.

Ortuño Limarino, T. Borsch, T. (2020) Gomphrena (Amaranthaceae, Gomphrenoideae) diversified as a C4 lineage in the New World tropics with specializations in floral and inflorescence morphology, and an escape to Australia. Willdenowia, 50(3): 345-381.

Tye, A. (1999). Revision of the threat status of the endemic flora of Galapagos: a preliminary analysis. In: Galagagos Report 3. WWF, Fundacion Natura. Quito.

Tye, A. and Lau, B. (2014). Blutaparon rigidum. The IUCN Red List of Threatened Species. Version 2014.3. ( Downloaded on 15 February 2015.

Tye, A. and Lau, B. (2014). Blutaparon rigidum. The IUCN Red List of Threatened Species 2014: e.T39087A61481721. Downloaded on 27 June 2021.

Walter, Kerry S. and Gillett, Harriet J. (eds.). (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre. Gland, Switzerland & Cambridge, UK: IUCN – The World Conservation Union. lxiv + 862 pp.


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