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Scientific Name | Triglochin bulbosa L. subsp. calcicola Mering, Köcke & Kadereit |
Higher Classification | Monocotyledons |
Family | JUNCAGINACEAE |
National Status |
Status and Criteria | Near Threatened B2ab(i,ii,iii,iv,v) |
Assessment Date | 2014/05/01 |
Assessor(s) | L. von Staden |
Justification | A widespread (EOO 25 508 km²), but localized habitat specialist (AOO estimated <1200 km²), remaining at between 10 and 16 locations and declining due to ongoing habitat loss and degradation and competition from alien invasive plants. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | Coastal areas from the Vredenburg Peninsula to False Bay and eastwards to the Agulhas Plain and Stilbaai. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Overberg Dune Strandveld, Cape Flats Dune Strandveld, Langebaan Dune Strandveld, Saldanha Limestone Strandveld, De Hoop Limestone Fynbos, Agulhas Limestone Fynbos, Cape Seashore Vegetation, Hartenbos Dune Thicket |
Description | Seasonally inundated shallow loam filled depressions on coastal limestone pavements. |
Threats |
| This subspecies' lowland coastal habitat continues to decrease across its range. On the Vredenburg Peninsula it is threatened by habitat loss to coastal development and limestone mining. On the Cape Peninsula, many subpopulations known through historical records are now locally extinct due to habitat loss to urban expansion. Remaining coastal wetland systems are degraded, polluted and infested with alien invasive plants. Further east, on the Agulhas Plain and towards Stilbaai, coastal limestone vegetation is densely infested by unmanaged alien invasive plants. Coastal development is also causing further population decline around Arniston and Stilbaai. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Triglochin bulbosa L. subsp. calcicola Mering, Köcke & Kadereit | NT B2ab(i,ii,iii,iv,v) | 2014.1 | |
Bibliography |
Köcke, A.V., Von Meiring, S., Mucina, L. and Kadereit, J.W. 2010. Revision of the Mediterranean and southern African Triglochin bulbosa complex (Juncaginaceae). Edinburgh Journal of Botany 67(3):353-398.
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Citation |
| von Staden, L. 2014. Triglochin bulbosa L. subsp. calcicola Mering, Köcke & Kadereit. National Assessment: Red List of South African Plants version . Accessed on 2025/05/12 |
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