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Scientific Name | Askidiosperma andreaeanum (Pillans) H.P.Linder |
Higher Classification | Monocotyledons |
Family | RESTIONACEAE |
Synonyms | Chondropetalum andreaeanum Pillans |
National Status |
Status and Criteria | Near Threatened B1ab(iii,v) |
Assessment Date | 2020/01/27 |
Assessor(s) | L. von Staden & P.A. Manyama |
Justification | Askidiosperma andreaeanum has a restricted distribution range, with an extent of occurrence (EOO) of 3648 km². It is threatened by competition from spreading, unmanaged alien invasive plants across its range, but is a fairly common species, known from more than 10 locations. Therefore it nearly meets the criteria threshold for Vulnerable under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Western Cape |
Range | This species is endemic to the mountains of the Western Cape, where it occurs mainly from Bain's Kloof to the Franschhoek Mountains, with isolated occurrences in the Riviersonderend, Hex River and Koue Bokkeveld mountains. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Kogelberg Sandstone Fynbos, Hawequas Sandstone Fynbos, Western Coastal Shale Band Vegetation, Winterhoek Sandstone Fynbos, South Sonderend Sandstone Fynbos, North Sonderend Sandstone Fynbos, South Hex Sandstone Fynbos |
Description | It occurs on rocky upper sandstone slopes near streams, sometimes on ridges or shale bands in mountain fynbos. |
Threats |
| This species is threatened across most of its range by spreading, uncontrolled alien invasive plants, which have already started to outcompete native species in the Bain's Kloof, Du Toit's Kloof and Franschhoek mountains. |
Population |
This species is fairly common, and known from 20-30 subpopulations. A continuing population decline is inferred from recent field observations indicating that alien invasive plants are spreading, as well as increasing in density across most of this species' range.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Askidiosperma andreaeanum (Pillans) H.P.Linder | Least Concern | Raimondo et al. (2009) | |
Bibliography |
Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.
Linder, H.P. 1985. Conspectus of the African species of Restionaceae. Bothalia 15(3&4):387-503.
Linder, H.P. 2011. The African Restionaceae: an Interactive Key identification and description system. Version 6. http://www.systbot.uzh.ch/Bestimmungsschluessel/Restionaceae_en.html. Downloaded.
Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity Institute, Pretoria.
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.
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Citation |
| von Staden, L. & Manyama, P.A. 2020. Askidiosperma andreaeanum (Pillans) H.P.Linder. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2023/12/01 |
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