|Scope: Global & Europe|
|Scientific Name:||Sinapidendron frutescens (Sol.) Lowe|
|Taxonomic Notes:||The genus Sinapidendron is endemic to Madeira and is part of the brassica complex. Two subspecies of S. frutescens (Sol) Lowe are recognized: S. frutescens ssp. frutescens and S. frutescens ssp. succulentum (Lowe) Rustan.|
|Red List Category & Criteria:||Endangered B1ab(iii,v)c(iii)+2ab(iii,v)c(iii) ver 3.1|
|Reviewer(s):||Nieto, A. & Kell, S.P.|
Sinapidendron frutescens is assessed as Endangered. Its extent of occurrence (EOO) is less than 5,000 km2 and its area of occupancy (AOO) is suspected to be less than 500 km2. The population is severely fragmented and there is a continuing decline in the extent and quality of habitat due the impact of road construction and invasive alien species. There are also extreme fluctuations in the number of localities in which the species occurs. The population of S. frutescens ssp. succulentum is Critically Endangered D1 as it is suspected to comprise less than 50 mature individuals and is threatened by road construction and invasive alien species.
|Range Description:||S. frutescens is endemic to Madeira. The two subspecies are geographically separated on Madeira island—S. frutescens ssp. frutescens is frequent in the mountains of the central part of the island, while S. frutescens ssp. succulentum occurs on the north coast. The extent of occurrence (EOO) of both subpopulations is less than 5,000 km2 and the area of occupancy (AOO) is less than 500 km2.|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The exact size and precise distribution of the subpopulations is not known. However, it is suspected that there are less 1,000 mature individuals of S. frutescens ssp. frutescens and less 50 mature individuals of S. frutescens ssp. succulentum.|
|Current Population Trend:||Unknown|
|Habitat and Ecology:||S. frutescens ssp. frutescens grows in the ravines and on the peaks of the central mountains of Madeira in shady areas, while the S. frutescens ssp. succulentum grows on sea cliffs on the north coast.|
|Use and Trade:||It is a potential gene donor to brassica crops.|
|Major Threat(s):||It is threatened by road construction, invasive alien species and landslides.|
More than 50% of the S. frutescens ssp. frutescens population is inside the boundaries of a protected area (Natural Park). However, the population of S. frutescens ssp. succulentum is not in a protected area.
EURISCO reports two germplasm accessions of S. frutescens stored in the genebank of the Escuela Técnica Superior de Ingenieros Agrónomos, Universidad Politécnica de Madrid, Spain (EURISCO Catalogue 2010). Germplasm is also stored in the Madeira Botanical Garden.
|Citation:||Carvalho, M. 2011. Sinapidendron frutescens. The IUCN Red List of Threatened Species 2011: e.T180555A7647204.Downloaded on 21 September 2018.|
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