Holothrix micrantha Schltr.
Status and Criteria
Critically Endangered (Possibly Extinct)
|L. Mills & L. von Staden|
|A rare, range-restricted species last recorded in 1925. Several searches within its habitat have thus far failed to relocate this species in the wild. It is possibly extinct, but also cryptic and easily overlooked, and a small chance remain that it may still be relocated.|
|South African endemic|
|Gauteng, Johannesburg to Heidelberg.|
Habitat and Ecology
|Gold Reef Mountain Bushveld, Egoli Granite Grassland|
|Grassy cliffs, 1500-1800 m.|
|Urban expansion has caused the loss of subpopulations in the south of Johannesburg. Some intact habitat remains around Heidelberg, but there is ongoing loss and degradation due to development, inappropriate fire management and spreading, unmanaged alien invasive plants. Good condition, intact habitat remains in Suikerbosrand Nature Reserve, but the species' presence in the reserve has not been confirmed.|
This species is known from a few records from southern Johannesburg and the Heidelberg area. It was last collected in 1925. There were unconfirmed sightings of this species in the Suikerbosrand Nature Reserve some years ago, but many repeated searches by orchid specialists and Gauteng Conservation Department staff have thus far failed to relocate this species. The current population status and trend is not known, and it may be extinct.
|Mills, L. & von Staden, L. 2016. Holothrix micrantha Schltr. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2019/12/11|