Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Geraniales Balsaminaceae

Scientific Name: Impatiens cribbii
Species Authority: (Grey-Wilson) Grey-Wilson
Impatiens gomphophylla Baker subspecies cribbii Grey-Wilson

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2013
Date Assessed: 2013-03-20
Assessor(s): IUCN SSC East African Plants Red List Authority
Reviewer(s): Hilton-Taylor, C. & Scott, J.A.
Contributor(s): Luke, Q., Bangirinama, F., Beentje, H.J., Gereau, R., Hemp, A., Kabuye, C., Kindeketa, W., Maunder, M., Mwangoka, M. & Ndangalasi, H.
As the habitat (near streams in grassland) in the largest part of its distribution area is declining in both extent and quality due to the suppression of regular burning and the discontinuing of grazing; and as one of the other locations is the scene of wholesale conversion to agriculture, we assess this taxon as Endangered.

Geographic Range [top]

Range Description:Known from 9 collections from 8 localities, all from Tanzania and collected 1905-2009, with two localities protected within Kitulo National Park and Ndukunduku Forest Reserve.
Countries occurrence:
Tanzania, United Republic of
Estimated area of occupancy (AOO) - km2:79.8
Continuing decline in extent of occurrence (EOO):Yes
Number of Locations:3
Lower elevation limit (metres):2000
Upper elevation limit (metres):2180
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Specimen label information for two collections: "very common" and "frequent". Specimens collected between 1905 and 2009.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:near streams in grassland, near stream in open area in forest. Herb to 1 m
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: There is no information on any use or trade.

Threats [top]

Major Threat(s): Most collections are from within Kitulo National Park, where the discontinuing of grazing and the halt of the regular burning is impacting grassland taxa. There is no protection of vegetation within Ndukunduku Forest Reserve. The Bulongwa area is heavily cultivated for wheat; conditions in Msima Stock Farm are unknown.  From these observed threats we are deducting an ongoing decline in quality and extent of suitable habitat, as well as a decline of the EOO.

Conservation Actions [top]

Conservation Actions: There are no conservation actions in place.

Classifications [top]

1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability: Marginal season: resident 
4. Grassland -> 4.6. Grassland - Subtropical/Tropical Seasonally Wet/Flooded
suitability: Suitable season: resident major importance:Yes

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.2. Small-holder farming
♦ timing: Ongoing ♦ scope: Minority (<50%) ♦ severity: Very Rapid Declines ⇒ Impact score: Medium Impact: 7 
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
  • 2. Species Stresses -> 2.1. Species mortality
  • 2. Species Stresses -> 2.2. Species disturbance

7. Natural system modifications -> 7.1. Fire & fire suppression -> 7.1.2. Supression in fire frequency/intensity
♦ timing: Ongoing ♦ scope: Majority (50-90%) ♦ severity: Slow, Significant Declines ⇒ Impact score: Medium Impact: 6 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation
  • 2. Species Stresses -> 2.1. Species mortality
  • 2. Species Stresses -> 2.2. Species disturbance

1. Research -> 1.5. Threats

Bibliography [top]

Grey-Wilson, C. 1980. Impatiens of Africa, morphology, pollination and pollinators, ecology, phytogeography, hybridisation, keys and a systematic treatment of all African species with a note on collecting and cultivation. A.A.Balkema, Rotterdam.

Grey-Wilson, C. 1994. Balsaminaceae. In: Flora of Tropical East Africa (FTEA). A.A. Balkema Publishers, The Netherlands.

IUCN. 2013. IUCN Red List of Threatened Species (ver. 2013.2). Available at: (Accessed: 13 November 2013).

Citation: IUCN SSC East African Plants Red List Authority. 2013. Impatiens cribbii. In: The IUCN Red List of Threatened Species 2013: e.T47347975A47347994. . Downloaded on 10 October 2015.
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