|
Scientific Name | Callitriche compressa N.E.Br. |
Higher Classification | Dicotyledons |
Family | PLANTAGINACEAE |
Synonyms | Callitriche bolusii Schönland & Pax ex Marloth |
National Status |
Status and Criteria | Least Concern |
Assessment Date | 2020/01/22 |
Assessor(s) | H. Mtshali & L. von Staden |
Justification | Callitriche compressa is a widespread species, with an extent of occurrence (EOO) of 115 730 km². It is known from only a few, scattered records, but is suspected to be overlooked, and more common than records suggest. Recent field surveys of localities known through historical records indicated that it is still present at most of these, and that it has no significant threats. Therefore this species is not suspected to be in danger of extinction. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape, KwaZulu-Natal, Western Cape |
Range | This species is widespread across eastern South Africa, from Eshowe in KwaZulu-Natal to George in the Western Cape. |
Habitat and Ecology |
Major system | Terrestrial |
Description | It occurs in wet mud, sand, clay or thin soil over bedrock on the margins of permanent rivers, seasonally inundated areas, and sand banks that form at the downstream end of plunge pools below waterfalls. |
Threats |
| There are no known significant threats to known subpopulations of this species (Lansdown et al. 2017). |
Population |
Field surveys of localities known through historical records in 2016 indicated that the species is still present at most of these, suggesting that there has been no significant population decline (Lansdown et al. 2017). The species is known from only a few, widely scattered records, and subpopulations are generally small (Lansdown et al. 2017). It is most likely overlooked, and more common than records suggest, as much of its habitat in the Eastern Cape remains botanically poorly explored. No attempt was made during the 2016 survey to locate any additional subpopulations, and more field surveys are needed to better understand the size and structure of the population.
|
Population trend | Stable |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Callitriche compressa N.E.Br. | LC | 2020.1 | | Callitriche compressa N.E.Br. | Data Deficient (Taxonomically Problematic) | Raimondo et al. (2009) | | Callitriche bolusii Schönland & Pax ex Marloth | Data Deficient (Taxonomically Problematic) | Raimondo et al. (2009) | |
Bibliography |
Cook, C.D.K. 2004. Aquatic and wetland plants of southern Africa. Backhuys Publishers, Leiden, The Netherlands.
Henderson, M. 1958. New and interesting records of African flowering plants: Callitrichaceae. Bothalia 7(1):22.
Lansdown, R.V., Glen, R. and Hassemer, G. 2017. Notes on the genus Callitriche (Plantaginaceae) in South Africa. Phytotaxa 317(3):219-225.
Raimondo, D., von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. and Manyama, P.A. 2009. Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria.
Sieben, E.J.J. 2009. The status and distribution of vascular plants (Magnoliophyta, Lycophyta, Pteridophyta). In: W.R.T. Darwall, K.G. Smith, D. Tweddle and P. Skelton (eds.), The status and distribution of freshwater biodiversity in southern Africa (pp. 83-98), IUCN and SAIAB, Gland, Switzerland and Grahamstown, South Africa.
|
Citation |
| Mtshali, H. & von Staden, L. 2020. Callitriche compressa N.E.Br. National Assessment: Red List of South African Plants version . Accessed on 2024/09/14 |
Comment on this assessment
