Frans Hubert Edouard Arthur Walter Robyns

Vangueriopsis is a genus of flowering plants in the family Rubiaceae.

Sporobolus africanus, or rat's tail grass, is a true grass in the tribe Zoysieae. Sporobolus africanus is known by many common names, including African dropseed, African dropseed grass, dropseed grass, Indian rat's tail grass, Parramatta grass, rat tail grass, rat's tail, rat's tail grass, rats' tails, ratstail, ratstail dropseed, rattail dropseed, rat-tail grass, rattail grass, rattailgrass, rush grass, smut grass, smutgrass, tough dropseed, tufty grass, and tussock grass.

Pygmaeothamnus is a monotypic genus of flowering plants in the family Rubiaceae. It was described by Walter Robyns in 1928 and originally held four species. It is found in central and southern Africa.

Hutchinsonia is a genus of flowering plants in the family Rubiaceae. It was described by Walter Robyns in 1928 and was named after his friend and colleague John Hutchinson. It is found in west tropical Africa.

Fadogiella is a small genus of flowering plants in the family Rubiaceae. It was described by Walter Robyns in 1928.

Vangueriopsis lanciflora is a species of flowering plants in the family Rubiaceae. The species has the largest distribution area of the genus and occurs in Central and South Tropical Africa (D.R.Congo to Tanzania and South Africa).

Vangueria cyanescens, the Kalahari wild-medlar, is a species of flowering plant in the family Rubiaceae. It is found in Angola, Botswana, Namibia, and Zambia. The epithet is a Latin adjective meaning dark or deep blue, referring to the colour of the leaves, especially after drying.

Rottboellia purpurascens is a species of swamp grass native to tropical Western Africa and the Congo Basin. It grows 1–1.6 metres (3 ft 3 in – 5 ft 3 in) tall stalks, with 25–55 centimetres (9.8 in – 1 ft 9.7 in) long leaves.

Ocotea kenyensis is a species of plant in the family Lauraceae. It is found in the Democratic Republic of the Congo, Eswatini, Ethiopia, Kenya, Malawi, Mozambique, Rwanda, South Africa, Sudan, Tanzania, Uganda, and Zimbabwe. It is threatened by habitat loss.

Eriosemopsis is a monotypic genus of flowering plants in the family Rubiaceae. It was described by Walter Robyns in 1928 and no changes have been made since then. The genus contains only one species, viz. Eriosemopsis subanisophylla, which is native to southeastern Eastern Cape and southern KwaZulu-Natal provinces of South Africa. The species is morphologically similar to the species Pygmaeothamnus zeyheri but differs by having a thick indumentum, raised venation and elliptical leaves.

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Vangueriopsis rubiginosa is a species of flowering plants in the family Rubiaceae. It is found in Cabinda, Cameroon, the Republic of the Congo, Equatorial Guinea, and the Democratic Republic of the Congo.

Vangueria chariensis is a species of flowering plant in the family Rubiaceae. It is endemic to southeastern Chad. It is named after the Chari River.

Uvariopsis vanderystii is a species of plant in the Annonaceae family. It is found in Cameroon, the Democratic Republic of the Congo, and Gabon. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.

Temnocalyx is a monotypic genus of flowering plants in the family Rubiaceae. It was originally described by Walter Robyns in 1928 and contained five species. Since then most of these species have been made synonym and currently only one species name remains valid, i.e. Temnocalyx nodulosa. The species is endemic to southwestern Tanzania.

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Meyna laxiflora is a species of flowering plant in the family Rubiaceae. It has a world-wide distribution across tropical and subtropical regions.

Cyperus chermezonianus is a species of sedge that is native to parts of Africa.

Beilschmiedia kweo is a species of flowering plant in the family Lauraceae. It is a tree endemic to eastern Tanzania. It a canopy tree, which grows 24 to 30 metres tall. It is native to the eastern Usambara Mountains, Uluguru Mountains, and Udzungwa Mountains, where it grows in moist submontane and montane tropical forest from 800 to 1,800 metres elevation.

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Uvariopsis congensis is a species of plant in the Annonaceae family. It is native to Angola, Cameroon, the Central African Republic, the Democratic Republic of the Congo, Gabon, Ivory Coast, Kenya, Sudan, Uganda, Zambia. Walter Robyns and Jean Ghesquière, the botanists who first formally described the species, named it after the Belgian Congo, now called the Democratic Republic of the Congo, where the specimen they examined was collected in the town of Kisantu near the Inkisi River.

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Stapfiella lucida is a shrub native to Burundi, Congo, Rwana, and Zaïre. It reaches heights of 1.5 – 3 meters high, shiny 4–5 cm leaves that cluster at the top of branches, yellowish white homostylous flowers, and chestnut colored seeds.

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