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Lagarosiphon hydrilloides 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Liliopsida Hydrocharitales Hydrocharitaceae

Scientific Name: Lagarosiphon hydrilloides
Species Authority: Rendle

Assessment Information [top]

Red List Category & Criteria: Endangered B2ab(iii) ver 3.1
Year Published: 2017
Date Assessed: 2016-06-08
Assessor(s): Beentje, H.J.
Reviewer(s): Luke, W.R.Q.
Facilitator/Compiler(s): Maiz-Tome, L.
Justification:
The species has an extent of occurrence of less than 20,000 km² and experiences continuing decline in habitat extent and quality as a result of diatomite mining. We therefore assess this taxon as Endangered.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This plant is endemic to Kenya in Eastern Africa where it has been collected in Kariandusi (Naivasha district), near Rumuruti (Laikipia district), the Cherengani foothills and Mt. Aberdare. As specimens have also been collected from Mt. Elgon it is quite possible that the species occurs in Uganda as well, but no voucher specimens have been seen.  There are two 'cf' specimens at Kew, one from lake Bunyoni, Kigezi, Uganda and one from Lake Ellis on Mt. Kenya which need confirmation. Despite earlier reports from Ghana this species does not occur there.
Countries occurrence:
Native:
Kenya
Additional data:
Estimated area of occupancy (AOO) - km2:24
Number of Locations:5
Lower elevation limit (metres):1650
Upper elevation limit (metres):3500
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no information on population size or trends.
Current Population Trend:Unknown
Additional data:
Continuing decline of mature individuals:Unknown
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:The species is found in still or slow moving water.
Systems:Freshwater
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: There is no information available concerning use or trade of this species.

Threats [top]

Major Threat(s): This species is locally impacted by agricultural developments, invasive species and drought. Mt. Elgon at this altitude is in a national park; the Rumuruti streams where the species was collected are potentially threatened by agriculture. The type locality (Kariandusi) is currently impacted by mining for diatomite and heavy settlements impacts water streams.

Conservation Actions [top]

Conservation Actions: No conservation actions are known. More research in population trends, biology and ecology, habitat status, and geographical range is needed.

Citation: Beentje, H.J. 2017. Lagarosiphon hydrilloides. The IUCN Red List of Threatened Species 2017: e.T185508A84270516. . Downloaded on 23 June 2017.
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