Stylochaeton crassispathus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Liliopsida Arales Araceae

Scientific Name: Stylochaeton crassispathus Bogner
Stylochiton crassispathus Bogner [orth. error]

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii)+2ab(iii); D2 ver 3.1
Year Published: 2009
Date Assessed: 2006-03-04
Needs updating
Assessor(s): Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project
Reviewer(s): Beentje, H., Gereau, R., Kabuye, C., Kalema, J., Luke, Q., Lyaruu, H., Maunder, M., Mwachala, G., Ndangalasi, H., Njau, F. & Schatz, G. (East African Plants Red List Authority)
Although poorly known, this species is listed as Vulnerable (VU) under criterion B1 because its extent of occurrence is well under 20,000 km² and the area of occupancy is under 2,000 km², the population is severely fragmented and known from only four locations and there is continuing decline because of the loss and degradation of habitat due to burning for coal production. It could possibly qualify for a more threatened status if the area of occupancy (AOO) were used, however, the AOO based on the four known collections is likely to be a significant under-estimate so it is not certain if the species would qualify for Critically Endangered (CR) or Endangered. Also qualifies for listing under VU D2 because of the low number of locations, and if three of these were seriously impacted by the charcoal burning the species would then qualify for listing as CR.

Geographic Range [top]

Range Description:Known only from four collections from very scattered localities from central to southern Tanzania. The last collection was made in 1975.
Countries occurrence:
Tanzania, United Republic of
Additional data:
Estimated area of occupancy (AOO) - km2:39
Number of Locations:4
Lower elevation limit (metres):100
Upper elevation limit (metres):420
Range Map:Click here to open the map viewer and explore range.

Population [top]

Current Population Trend:Unknown
Additional data:
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:Perennial herb in lowland evergreen forest, Sclerocarya woodland and wooded grassland.
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: May be used locally for medicinal purposes.

Threats [top]

Major Threat(s): There is ongoing habitat loss due to burning for charcoal in the dry forests.

Conservation Actions [top]

Conservation Actions: Recorded from the Selous Game Reserve and from near or possibly in Kwambai Forest Reserve.

Citation: Eastern Arc Mountains & Coastal Forests CEPF Plant Assessment Project. 2009. Stylochaeton crassispathus. The IUCN Red List of Threatened Species 2009: e.T158343A5196564. . Downloaded on 21 April 2018.
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