Peninsula Bogbean

Taxonomy

Scientific Name

Villarsia goldblattiana Ornduff

Higher Classification

Dicotyledons

Family

MENYANTHACEAE

Common Names

Peninsula Bogbean (e)

National Status

Status and Criteria

Vulnerable D2

Assessment Date

2017/07/19

Assessor(s)

D. Raimondo & H. Mtshali

Justification

Villarsia goldblattiana is a rare species occurring at an estimated three to five locations. It is potentially threatened by competition from alien invasive plants and too frequent fire. It therefore qualifies as Vulnerable under criterion D.

Distribution

Endemism

South African endemic

Provincial distribution

Western Cape

Range

This species is endemic to the southern Cape Peninsula.

Habitat and Ecology

Major system

Freshwater

Major habitats

Peninsula Sandstone Fynbos

Description

It is localized to wet soils and marshes in sandstone fynbos.

Threats

Parts of this species' range was historically densely infested with alien invasive plants, but these were cleared in the early 2000s. Alien invasive plants however require continued clearing and management, as they persist in soil-stored seed banks, emerging in high densities following natural veld fires. Uncontrolled and too frequent fires may harm the species ability to reproduce (Cook 2004).

Population

This species is known from a few isolated subpopulations, but is locally common in suitable habitat. The population is not suspected to be declining at present, but could decline rapidly if alien invasive plants are not managed.

Population trend

Stable

Assessment History

Taxon assessed	Status and Criteria	Citation/Red List version
Villarsia goldblattiana Ornduff	VU D2	Raimondo et al. (2009)

Bibliography

Cook, C.D.K. 2004. Aquatic and wetland plants of southern Africa. Backhuys Publishers, Leiden, The Netherlands.

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.

Helme, N.A. and Trinder-Smith, T.H. 2006. The endemic flora of the Cape Peninsula, South Africa. South African Journal of Botany 72(2):205-210.

Ornduff, R. 1999. A new Species of Villarsia (Menyanthaceae) from South Africa. Novon 9(3):407-409.

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

Raimondo, D. & Mtshali, H. 2017. Villarsia goldblattiana Ornduff. National Assessment: Red List of South African Plants version . Accessed on 2025/01/25

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