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Scientific Name | Moraea ogamana Goldblatt & J.C.Manning |
Higher Classification | Monocotyledons |
Family | IRIDACEAE |
National Status |
Status and Criteria | Critically Endangered B2ab(i,ii,iii,iv,v) |
Assessment Date | 2014/04/17 |
Assessor(s) | L. von Staden |
Justification | AOO <5 km², three isolated, severely fragmented subpopulations remain after extensive habitat loss to agricultural and urban expansion, and continues to decline due to ongoing habitat loss and degradation. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Upper Breede River Valley to Strand. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Cape Flats Sand Fynbos, Lourensford Alluvium Fynbos, Swartland Alluvium Fynbos, Breede Alluvium Fynbos |
Description | Waterlogged stony soil on flats. |
Threats |
| Most locations known through historical records are now locally extinct due to habitat loss to agricultural and urban expansion on the Cape Lowlands. One subpopulation, although protected in a municipal reserve, continues to be threatened by ongoing habitat loss and degradation, particularly too frequent fire and competition from alien invasive plants. A second subpopulation, although also in a reserve, continues to be threatened by competition from alien invasive grasses and pollution from fertiliser, pesticide and herbicide runoff from surrounding agricultural fields. |
Population |
An extremely rare species, known from only eight collections, five of which are now locally extinct due to habitat loss to agricultural expansion. Three known subpopulations remain on small, isolated fragments of lowland vegetation. Two are small nature reserves, one in an urban area (nine hectares), the second, a fragment of 28 hectares among crop fields, and the third, a private nature reserve of 2800 hectares, but the subpopulation is found in only a small area. This species is however superficially very similar to the widespread and common Moraea tripetala, and may be overlooked, and more surveys of historical localities may reveal more surviving subpopulations.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Moraea ogamana Goldblatt & J.C.Manning | CR B2ab(i,ii,iii,iv,v) | 2014.1 | |
Bibliography |
Goldblatt, P. and Manning, J.C. 2012. Systematics of the hypervariable Moraea tripetala complex (Iridaceae: Iridoideae) of the southern African winter rainfall zone. Bothalia 42(2):111-135.
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Citation |
| von Staden, L. 2014. Moraea ogamana Goldblatt & J.C.Manning. National Assessment: Red List of South African Plants version . Accessed on 2025/05/09 |
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