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Dierama erectum

Scientific Name
Dierama erectum Hilliard
Higher Classification
National Status
Status and Criteria
Endangered B1ab(ii,iii,iv,v)
Assessment Date
I.M. Johnson, C.R. Scott-Shaw, H. Mtshali & L. von Staden
Known from 11 small, severely fragmented subpopulations at eight locations, in a very small area (EOO 4325 km²). Most subpopulations remain in grassland fragments where they are declining due to overgrazing.
South African endemic
Provincial distribution
KwaZulu-Natal, Mpumalanga
Northern KwaZulu-Natal and southern Mpumalanga, between Ngome and Luneburg.
Habitat and Ecology
Major system
Major habitats
Ithala Quartzite Sourveld, Northern Zululand Mistbelt Grassland, Paulpietersburg Moist Grassland, Wakkerstroom Montane Grassland, Income Sandy Grassland
Wet mistbelt grassland on dolerite along streams.
Afforestation has transformed all but a few isolated pockets of its grassland habitat. These fragments are the only available grazing for the livestock of the local populations, and large numbers of animals are concentrated on these small fragments resulting in severe overgrazing and degradation of these grassland fragments (I. Johnson, C.R. Scott-Shaw pers. comm.). Inappropriate fire management is further degrading this species' remaining habitat, with many grassland areas becoming increasingly encroached with woody species.

This species is known from 11 subpopulations, and recent field observations indicate that they are often small, consisting of fewer than 50 mature individuals (I.M. Johnson pers. obs.). Eight of these are isolated, and the population is therefore considered severely fragmented.

Population trend
Johnson, I.M., Scott-Shaw, C.R., Mtshali, H. & von Staden, L. 2015. Dierama erectum Hilliard. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2019/11/12

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Distribution map

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