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

Nicotiana glauca \| Wild tobacco	2215_1700	15/02/2020	Walters, Matthew
Prosopis spp	2215_1700	15/02/2020	Walters, Matthew
Datura inoxia \| Downy thorn apple	2215_1700	15/02/2020	Walters, Matthew
Lantana camara \| Lantana	1752_1926	03/02/2020	Ward, David
Ricinus communis \| Castor oil plant	1735_2436	01/02/2020	Ward, David
Prosopis spp	1955_1457	26/01/2020	Walters, Matthew
Opuntia sulphurea \| Sulphur-flowered prickly pear	22.562S, 17.085E	23/01/2020	Hart, Toni
Prosopis spp	2127_1504	20/01/2020	Walters, Matthew
Cryptostegia grandiflora \| Rubber vine	2022_1457	29/01/2020	Walters, Matthew
Dodonaea viscosa var angustifolium \| Sand olive	1925_2031	08/12/2019	Ward, David

Opuntia sulphurea \| Sulphur-flowered prickly pear	Opuntia sulphurea \| Sulphur-flowered prickly pear	Opuntia sulphurea \| Sulphur-flowered prickly pear	Caesalpinia gilliesii \| Bird of paradise

Latest alien plants records map

Top ten alien plant atlassers

Ranked by number of species

Observer	No. of species

Walters, Matthew	28
Mutota, Petra	27
Ward, David	24
Kalumbu, Sarry	22
Matheus, Jeremia	21
Mannheimer, Coleen	19
Mutota, Patrick	18
Hauptfleisch, Morgan	17
Brown, Chris	17
Peters, Raymond	13

Top ten alien plant atlassers

Ranked by number of records

Observer	No. of records

Mutota, Petra	599
Ward, David	481
Walters, Matthew	331
Matheus, Jeremia	217
Kalumbu, Sarry	171
Mutota, Patrick	108
Mannheimer, Coleen	105
Hauptfleisch, Morgan	71
Brown, Chris	70
Kern, Ludi	66

Opuntia sulphurea \| Sulphur-flowered prickly pear	Opuntia sulphurea \| Sulphur-flowered prickly pear	Opuntia sulphurea \| Sulphur-flowered prickly pear	Caesalpinia gilliesii \| Bird of paradise

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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