''Gibbaeum'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of about 21 species of small

succulent plant In botany, succulent plants, also known as succulents, are plants with parts that are thickened, fleshy, and engorged, usually to retain water in arid climates or soil conditions. The word ''succulent'' comes from the Latin word ''sucus'', meanin ...

s of the family

Aizoaceae The Aizoaceae (), or fig-marigold family, is a large family of dicotyledonous flowering plants containing 135 genera and about 1,800 species. Several genera are commonly known as 'ice plants' or 'carpet weeds'. The Aizoaceae are also referred to a ...

, indigenous to the

Little Karoo The Karoo ( ; from the Afrikaans borrowing of the South Khoekhoe Khoemana (also known as !Orakobab or Korana) word is a semidesert natural region of South Africa. No exact definition of what constitutes the Karoo is available, so its extent i ...

region of

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...

. The name "Gibbaeum" comes from the Latin ''gibbosus'' (hunchback)

Description

These dwarf succulents are characterized by distinctively asymmetrical pairs of leaves, mostly globular or sometimes thick and arcuate. The sizes of the leaves of each pair are nearly always different. Gibbaeums grow in clumps and produce pink or white flowers in spring.

Distribution

Genus ''Gibbaeum'' is predominantly indigenous to the

region of the

Western Cape Province The Western Cape ( ; , ) is a province of South Africa, situated on the south-western coast of the country. It is the fourth largest of the nine provinces with an area of , and the third most populous, with an estimated 7 million inhabi ...

. A few species extend outside of this region. Three species extend north into the

Great Karoo The Karoo ( ; from the Afrikaans borrowing of the South Khoekhoe Khoemana (also known as !Orakobab or Korana) word is a semidesert natural region of South Africa. No exact definition of what constitutes the Karoo is available, so its extent i ...

region: '' Gibbaeum gibbosum'', '' Gibbaeum heathii'' and '' Gibbaeum nuciforme''. Two extend south into the

Overberg __NOTOC__ Overberg is a region in South Africa to the east of Cape Town beyond the Hottentots-Holland mountains. It lies along the Western Cape Province's south coast between the Cape Peninsula and the region known as the Garden Route in the e ...

region: '' Gibbaeum esterhuyseniae'' and '' Gibbaeum hartmannianum''.

Cultivation

Sunny exposure and well drained soil. Their natural range spans the boundary between winter and summer rainfall areas of

southern Africa Southern Africa is the southernmost region of Africa. No definition is agreed upon, but some groupings include the United Nations geoscheme for Africa, United Nations geoscheme, the intergovernmental Southern African Development Community, and ...

, and their growth period (emergence of new leaves and flowering) is therefore in summer for some species and in winter for other ones. However, overall most species can be watered primarily in winter. Temperature must stay above 10 °C in winter. Propagation can be done by cuttings or by seeds. Many of the species hybridise easily - with each other and with the related genus '' Muiria''.

List of species

* '' Gibbaeum album'' * '' Gibbaeum angulipes'' * '' Gibbaeum blackburniae'' * '' Gibbaeum comptonii'' * '' Gibbaeum dispar'' * '' Gibbaeum esterhuyseniae'' * '' Gibbaeum geminum'' * '' Gibbaeum gibbosum'' * '' Gibbaeum hartmannianum'' * '' Gibbaeum heathii'' * '' Gibbaeum luckhofii'' * '' Gibbaeum nebrownii'' * '' Gibbaeum nuciforme'' * '' Gibbaeum pachypodium'' * '' Gibbaeum petrense'' * '' Gibbaeum pilosulum'' * ''

Gibbaeum pubescens ''Gibbaeum'' is a genus of about 21 species of small succulent plants of the family Aizoaceae, indigenous to the Little Karoo region of South Africa. The name "Gibbaeum" comes from the Latin ''gibbosus'' (hunchback) Description These dwarf suc ...

'' * '' Gibbaeum schwantesii'' * '' Gibbaeum velutinum'' File:Z Gibbaeum album growing among rocks - RSA.jpg, '' Gibbaeum album'' File:Gibbaeum dispar IMG 2483.jpg, '' Gibbaeum dispar'' File:Gibbaeum geminum - SBG 2.jpg, '' Gibbaeum geminum'' File:4 Gibbaeum gibbosum -Touwsrivier - Copy.jpg, '' Gibbaeum gibbosum'' File:5 Gibbaeum hartmannianum - Overberg Malgas - Copy.jpg, '' Gibbaeum hartmannianum'' File:Gibbaeum heathii varieties.jpg, '' Gibbaeum heathii'' forms File:Gibbaeum velutinum barrydale.jpg, '' Gibbaeum velutinum'' File:6 Gibbaeum petrense Brandvlei Rd - Copy.jpg, '' Gibbaeum petrense'' File:Gibbaeum pubescens - N Barrydale 2.jpg, ''

'' File:1 Gibbaeum shandii - Kirstenbosch gardens.jpg, ''

'' var. ''shandii'' File:Gibbaeum schwantesii IMG 1568.jpg, '' Gibbaeum schwantesii'' File:Gibbaeum pilosulum in cultivation - cape town.jpg, '' Gibbaeum pilosulum'' File:Gibbaeum nuciforme.jpg, '' Gibbaeum nuciforme'' File:Gibbaeum nebrownii.jpg, '' Gibbaeum nebrownii''

References

External links

* * Aizoaceae genera Taxa named by N. E. Brown Taxa named by Adrian Hardy Haworth {{Aizoaceae-stub