Hellmut R. Toelken (born 1939 in

Windhoek Windhoek (; ; ) is the capital and largest city of Namibia. It is located in central Namibia in the Khomas Highland plateau area, at around above sea level, almost exactly at the country's geographical centre. The population of Windhoek, which ...

South-West Africa South West Africa was a territory under South African administration from 1915 to 1990. Renamed ''Namibia'' by the United Nations in 1968, it became independent under this name on 21 March 1990. South West Africa bordered Angola ( a Portu ...

, today

Namibia Namibia, officially the Republic of Namibia, is a country on the west coast of Southern Africa. Its borders include the Atlantic Ocean to the west, Angola and Zambia to the north, Botswana to the east and South Africa to the south; in the no ...

) is a

South Australia South Australia (commonly abbreviated as SA) is a States and territories of Australia, state in the southern central part of Australia. With a total land area of , it is the fourth-largest of Australia's states and territories by area, which in ...

botanist Botany, also called plant science, is the branch of natural science and biology studying plants, especially Plant anatomy, their anatomy, Plant taxonomy, taxonomy, and Plant ecology, ecology. A botanist or plant scientist is a scientist who s ...

. He retired in December 2008 from the position of senior biologist at the State Herbarium of South Australia, but remains an honorary research associate. Earlier he was with the Botanical Research Institute, Department of Agricultural Technical Services, Pretoria, S Africa. His interests include the

genera Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ...

Kunzea ''Kunzea'' is a genus of plants in the family Myrtaceae and is Endemism, endemic to Australasia. They are shrubs, sometimes small trees and usually have small, crowded, rather Aroma compound, aromatic leaves. The flowers are similar to those of p ...

'', ''

Hibbertia ''Hibbertia'', commonly known as guinea flowers, is a genus of flowering plants in the family Dilleniaceae. They are usually shrubs with simple leaves and usually yellow flowers with five sepals and five petals. There are about 400 species, mo ...

'', ''

Crassula ''Crassula'' is a genus of succulent plants containing about 200 accepted species, including the popular jade plant (''Crassula ovata''). They are members of the stonecrop family (Crassulaceae) and are native to many parts of the globe, but culti ...

'' and ''

Carpobrotus ''Carpobrotus'', commonly known as pigface, ice plant, sour fig, Hottentot fig, and clawberry is a genus of ground-creeping plants with succulent leaves and large daisy-like flowers. The name comes from the Ancient Greek ' "fruit" and ' "edible", ...

''. He is the author of the book ''A Revision of the Genus Crassula in Southern Africa''. The New Zealand plant species '' Kunzea toelkenii'' is named after him.

References

{{DEFAULTSORT:Toelken, Helmut R. Living people 20th-century Australian botanists 1939 births 21st-century Australian botanists