Species Hoodia dinteri
Pictures from Observations
Probably for Dr William Chamberlain Hood (1790–1879), British surgeon who lived in South Lambeth, London, and collected succulents.
Moritz Kurt Dinter (1868 -1945) was a German botanist and explorer in South West Africa (Namibia). Dinter collected many new species, covered an estimated 40,000 km on foot, by wagon and motor vehicle during the course of his collecting trips, which spanned 38 years. His collection of pressed specimens numbered in excess of 8400.
Dinter's biography can be seen at Wikipedia here