Atlasing in Namibia | Citizen science projects recording biodiversity and cultural heritage in Namibia

Atlas of alien plants

Several species of alien plants in Namibia pose a threat to the natural vegetation. Mapping these species and obtaining basic information on them is a first step in assessing the level of threat and how best to tackle the problem.

If you are not sure of the identification of a plant species, take photos and a specimen and ask advice from the National Herbarium of Namibia. Read their guidelines on how to request an identification and submit a specimen. Enter the specimen reference number in the comments field of your atlasing record.

Take action

If you would like to get involved in removing alien cacti in the Windhoek area, note that the City of Windhoek division of solid waste management will on request remove every lorry load of extracted cacti piled up at accessible places next to a street. If you want a heap of cacti to be removed or a container to be supplied, Theckla Kangueehi from Solid Waste Management should be contacted at tec@windhoekcc.org.na or 061 290 3108 or 081 241 6399. Where cacti are removed, the position should be reported to the botanical society so that after some months they can root out whatever starts growing again from missed pieces, roots or seeds. The email address is nambotsoc@gmail.com. Please also contact Gunhild Voigts who has been spearheading the efforts to remove alien plants in Windhoek: gunhild.voigts@gmail.com or 081 208 5747 and find more information on the Cactus Clean-up website.

Latest alien plants records

These are the latest records added, for alien plants.

» You can also see all records here.

Species	Grid Ref	Date	Recorder

Melia azedarach \| Syringa tree	1753_2443	26/09/2020	Ward, David
Salvinia molesta \| Kariba weed	1828_2335	23/09/2020	Ward, David
Salvinia molesta \| Kariba weed	1759_2317	21/09/2020	Ward, David
Opuntia stricta \| Common pest pear	1830_1911	19/09/2020	Ward, David
Opuntia stricta \| Common pest pear	1927_1814	19/09/2020	Ward, David
Opuntia sulphurea	2222_1726	12/10/2020	Walters, Matthew
Parkinsonia aculeata \| Jerusalem thorn	2217_1732	12/10/2020	Walters, Matthew
Agave americana \| American agave	2217_1732	12/10/2020	Walters, Matthew
Opuntia sulphurea	2154_1748	12/10/2020	Walters, Matthew
Dodonaea viscosa var angustifolium \| Sand olive	2129_1750	12/10/2020	Walters, Matthew

Observer	No. of species
Mutota, Petra	27
Walters, Matthew	27
Ward, David	25
Kalumbu, Sarry	22
Matheus, Jeremia	21
Mannheimer, Coleen	19
Mutota, Patrick	18
Brown, Chris	17
Hauptfleisch, Morgan	17
Peters, Raymond	13

Ranked by number of records

Observer	No. of records

Walters, Matthew	792
Ward, David	661
Mutota, Petra	601
Matheus, Jeremia	217
Kalumbu, Sarry	171
Mutota, Patrick	108
Mannheimer, Coleen	105
Brown, Chris	75
Hauptfleisch, Morgan	71
Kern, Ludi	66

Latest alien plants records

Latest alien plants records map

Top ten alien plant atlassers

Top ten alien plant atlassers

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Atlas of alien plants

Take action

Latest alien plants records

Latest alien plants records map

Top ten alien plant atlassers

Top ten alien plant atlassers