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Scientific Name | Justicia orchioides L.f. subsp. orchioides |
Higher Classification | Dicotyledons |
Family | ACANTHACEAE |
Synonyms | Gendarussa diosmophylla Nees |
Common Names | Ribbokbos (a) |
National Status |
Status and Criteria | Vulnerable B1ab(i,ii,iii,iv,v) |
Assessment Date | 2018/05/29 |
Assessor(s) | L. von Staden |
Justification | Justicia orchioides subsp. orchioides is known from seven locations and declining due to ongoing habitat loss, degradation, and competition from alien invasive plants. It has an extent of occurrence (EOO) of 2008 km², and is listed as Vulnerable under criterion B. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape |
Range | This species is endemic to South Africa, and is found from St Francis Bay to Addo. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Albany Alluvial Vegetation, Sundays Valley Thicket, Grass Ridge Bontveld, Sundays Mesic Thicket, Motherwell Karroid Thicket, Bethelsdorp Bontveld |
Description | It occurs in open sandy areas, often in lime-rich soils. |
Threats |
| Justicia orchioides subsp. orchioides is threatened by severe, ongoing habitat loss and degradation mainly due to urban expansion around Uitenhage and Port Elizabeth. In addition, it is threatened by habitat loss to quarrying at St Francis Bay, industrial development and rapid spread of informal settlements around Coega, and competition from alien invasive plants across most of its range. In the Sundays River Valley between Coega and Addo it has lost significant amounts of habitat to agricultural expansion. |
Population |
This taxon is locally abundant, often dominant within its habitat. It may be somewhat resilient to disturbance, as it persists in degraded areas. It has been recorded from seven locations, but may exist at a few more - particularly in the Sundays River Valley. It is still extant at four of these locations, but the other three, which are known from historical records may be locally extinct due to habitat loss.
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Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Justicia orchioides L.f. subsp. orchioides | VU B1ab(i,ii,iii,iv,v) | 2020.1 | | Justicia orchioides L.f. subsp. orchioides | Least Concern | Raimondo et al. (2009) | |
Bibliography |
Immelman, K. 1986. ACANTHACEAE: Notes on southern African species of Justicia L. Bothalia 16(1):39-64.
Immelman, K.L. 1995. Justicia. In: O.A. Leistner (ed). Flora of southern Africa 30 Part 3: Acanthaceae, Fascicle 1: Justiciinae:18-46. National Botanical 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. 2018. Justicia orchioides L.f. subsp. orchioides. National Assessment: Red List of South African Plants version . Accessed on 2025/04/19 |
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