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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Lamiales

Familia: Pedaliaceae
Genus: Rogeria
Species: R. adenophylla – R. armeniaca – R. bigibbosaR. longiflora


Rogeria J.Gay ex Delile Pl. Afr. Meroe Caill. 4: 368. (1826)

Type species: Rogeria adenophylla J.Gay ex Delile Pl. Afr. Meroe Caill. 78, t. 2, f. 3. (1826)


Rogeria J. Gay Ann. Sci. Nat. (Paris) 1: 457. (1824) nom. inval., see ICN Art. 38.5, 38.6, ex. 8 (Melbourne Code)


International Plant Names Index. 2015. Rogeria. Published online. Accessed: Apr. 1 2015.
Tropicos.org 2015. Rogeria. Missouri Botanical Garden. Published on the internet. Accessed: 2015 Apr. 1.

Rogeria is a genus of plants in the Pedaliaceae family consisting of several species, with a native range extending from the island of Cape Verde to Eritrea, Namibia to the Cape Provinces (of South Africa).

It is found in the countries of Angola, Burkina, Cameroon, Cape Verde, Chad, Eritrea, Mali, Mauritania, Namibia, Niger, Nigeria, Senegal, Sudan and South Africa.[1] It was also thought to be found in Brazil as well as Africa,[2] but this seems to be a mix-up with another shrub species.

Some species such as Rogeria longiflora are medicinal plants.[3]

General description

Rogeria species bear long, tubular flowers but with very woody armoured capsules and flattened seeds.[4]

It is a varied genus, it does not have solitary flowers (similar to Uncarina species) and with the common denominator that in the difference in the size of the carpels and the indehiscence (splitting of the seed capsule) of the adaxial carpel.[5] Species Ceratotheca and Rogeria are known as 'Wind-ballists', this is due to when the fruits open at the top but stay on the plant, then as the stems produce strong movements, the seeds are then gradually expelled from the capsule.[6]

The calyx has five sepals (petals), the corolla is tubular and funnel-shaped. The stamens are four in number, and do not project beyond the border of the corolla. The fruit (or seed capsule) is almost nut-like, opens towards the point. It has 4 - 8 spines, and appears to be 4-6 celled. The cells having either an indefinite number or only solitary seeds.[2]


The generic name of Rogeria is derived from Mr. Roger, a French plant collector, who collected in Senegal.[7] Lotte Burkhardt's book 'Index of Eponymic Plant Names' in 2018 notes that Jacques-François Roger (1787–1849) was a French lawyer, colonial administrator and plant collector.[8]

Rogeria (Pedaliaceae) was initially named by Swiss/French botanist Jaques Étienne Gay in 1824 in Ann. Sci. Nat. (Paris) Vol.1 on page 457, [9] this was later regarded as invalid by Biodiversity Heritage Library and IPNI. As the name was not validly published in 1824 and also because no genus description was provided and the genus was found later not to be monotypic.[9][10]

Rogeria J.Gay ex Delile, Cent. Pl. Afr. Voy. Méroé 78, 106, t. 2, fig. 3; Atlas 2: t. 63, fig. 3 (1826).[11] by French botanist Alire Raffeneau Delile is regarded as the true author citation. Such as Rogeria adenophylla is the type species and was published by J. Gay ex Delile in Cent. Pl. Afr. Voy. Méroé. ('Centurie de Plantes d'Afrique du Voyage à Méroé') Vol.78, table 2, figure 3. in 1826.[11]
Species known

According to Kew,[1]

Rogeria adenophylla J.Gay ex Delile
Rogeria armeniaca Bedigian
Rogeria bigibbosa Engl.
Rogeria longiflora (D.Royen) J.Gay ex DC. ('desert foxglove'[12])

Tropicos (lists, as of 9 August 2021); Rogeria adenophylla, Rogeria armeniaca, Rogeria bigibbosa, Rogeria microcarpa Klotzsch and Rogeria etrophila De Wint.[13]

The genus is accepted by United States Department of Agriculture and the Agricultural Research Service, they accept 3 species, Rogeria adenophylla J. Gay ex Delile, Rogeria bigibbosa Engl. and Rogeria longiflora (L.) J. Gay ex DC.[14]

"Rogeria J.Gay ex Delile | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 8 August 2021.
Thomas Moore The Treasury of Botany, Part 1 (1866), p. 988, at Google Books
Kandari, L.S.; Kulkarni, M.G.; Van Staden, J. (March 2012). "Germination and growth requirements of Rogeria longiflora – Medicinal plant of the Namib Desert". South African Journal of Botany. 79: 84–90.
"Dewinteria petrophila | PlantZAfrica". pza.sanbi.org. Retrieved 10 August 2021.
Joachim W. Kadereit (Editor) The Families and Genera of Vascular Plants; Flowering Plants · Dicotyledons: Lamiales (except Acanthaceae including Avicenniaceae) (2004), p. 314, at Google Books
Ib Friis and Olof Ryding (Editors) Biodiversity Research in the Horn of Africa Region: Proceedings of the Third International Symposium on the Flora of Ethiopia and Eritrea at the Carlsberg Academy, Copenhagen, August 25-27, 1999 (2001), p. 65, at Google Books
Umberto Quattrocchi CRC World Dictionary of Plant Names: Common Names, Scientific Names, Eponyms, Synonyms, and Etymology; Volume IV R-Z (2000), p. 2329, at Google Books
Burkhardt, Lotte (2018). Verzeichnis eponymischer Pflanzennamen – Erweiterte Edition [Index of Eponymic Plant Names – Extended Edition] (pdf) (in German). Berlin: Botanic Garden and Botanical Museum, Freie Universität Berlin. doi:10.3372/epolist2018. ISBN 978-3-946292-26-5. Retrieved 1 January 2021.
"Rogeria adenophylla | International Plant Names Index". www.ipni.org. Retrieved 9 August 2021.
"Rogeria adenophylla J. Gay ex Delile GRIN-Global". npgsweb.ars-grin.gov. Retrieved 10 August 2021.
"Rogeria adenophylla | International Plant Names Index". www.ipni.org. International Plant Names Index. Retrieved 9 August 2021.
Latti, Ivan. "Rogeria longiflora". Operation Wildflower. Retrieved 14 August 2021. "Rogeria longiflora, the desert foxglove or in Afrikaans djirrie witblom (djirrie white flower)"
"Tropicos | Name - Rogeria J. Gay ex Delile". legacy.tropicos.org. Retrieved 8 August 2021.
"GRIN-Global". npgsweb.ars-grin.gov. Retrieved 8 August 20

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