Rudolf L. Verhoeven

Buckollia is a genus of plants in the Apocynaceae, first described in 1994. It is native to eastern Africa.

Buckollia volubilis is a species of plant in the Apocynaceae family. It is native to the Ethiopia, Kenya, Somalia, Tanzania and Uganda. Rudolf Schlechter, the botanist who first formally described the species, named it after its twining (volubilis in Latin) growth habit, using the synonymous name Raphionacme volubilis.

Maclaudia is a monotypic genus of flowering plants belonging to the family Apocynaceae. It only contains one known species, Maclaudia felixii Venter & R.L.Verh. Its native range is western and western central Tropical Africa. It is found in the countries of Cameroon and Guinea. The genus name of Maclaudia is in honour of Charles Maclaud (1866–1933), French doctor and zoologist; plant and animal collector. The Latin specific epithet of felixii refers to botanist Henri Jacques-Félix, (1907-2008) (Jacq.-Fél.) who is also honoured in the naming of Pitcairnia feliciana. In Paris, Botanists Venter

Buckollia tomentosa is a species of plant in the Apocynaceae family. It is native to the Ethiopia, Sudan, and Uganda. Eileen Adelaide Bruce, the botanist who first formally described the species, named it after the dense covering of wooly hairs (tomentosus in Latin) on its flowers.

Batesanthus pseudopalpus is a species of plant in the Apocynaceae family. It is native to the Republic of the Congo and Gabon. Hendrik J. T. Venter and Rudolf L. Verhoeven, the botanists who first formally described the species, named it after the lobes of its corona which they said resemble the pedipalps of the rain spiders Palystes castaneus and Palystes superciliosus.

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Cryptolepis africana is a species of plant in the Apocynaceae family. It is native to Kenya. Arthur Allman Bullock, the botanist who first formally described the species, using the synonymous subspecies name Cryptolepis sinensis subsp. africana, named it after the location where the sample he examined was collected in East Africa.

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Chlorocyathus lobulata is a species of plant in the Apocynaceae family. It is native to the Cape Provinces of South Africa. Hendrik J. T. Venter and Rudolf L. Verhoeven, the botanists who first formally described the species named it, using the synonym Raphionacme lobulata, after the distinctive lobes of the corona of its flowers.