''Kalaharituber'' is a fungal

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 ...

in the family

Pezizaceae The Pezizaceae (commonly referred to as cup fungi) are a family of fungi in the Ascomycota which produce mushrooms that tend to grow in the shape of a "cup". Spores are formed on the inner surface of the fruit body ( ascoma). The cup shape typi ...

. It is a

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

genus, whose single truffle-like species, ''Kalaharituber pfeilii'', is found in the

Kalahari Desert The Kalahari Desert is a large semiarid climate, semiarid sandy savanna in Southern Africa covering including much of Botswana as well as parts of Namibia and South Africa. It is not to be confused with the Angolan, Namibian, and South African ...

, which spans the larger part of

Botswana Botswana, officially the Republic of Botswana, is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory part of the Kalahari Desert. It is bordered by South Africa to the sou ...

, the east of

Namibia Namibia, officially the Republic of Namibia, is a country on the west coast of Southern Africa. Its borders include the Atlantic Ocean to the west, Angola and Zambia to the north, Botswana to the east and South Africa to the south; in the no ...

and the Northern Cape Province 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 ...

Taxonomy

The fungus was first described scientifically in 1895 by German mycologist Paul Christoph Hennings as ''Terfezia pfeilii''. It was moved to its own genus in 2005 by James Trappe and Varda Kagan-Zur.

Description

Fruiting bodies can be up to in diameter. These weigh approximately , although larger rains (which affect weight) can cause them to weigh twice as much. These fruits grow close to the surface, which causes surface cracks on the ground above after rains. These fruiting bodies can occur as much as 40 cm away from the main

hypha A hypha (; ) is a long, branching, filamentous structure of a fungus, oomycete, or actinobacterium. In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a mycelium. Structure A hypha consists of one o ...

Habitat

''Kalaharituber pfeilii'' is found the Kalahari Desert, as well as in other arid regions of South Africa, Angola, Botswana and Namibia. It is found in soils with a pH ranging from 5.5 to 6.5, with a sand content varying from 94%-97%, a clay content varying from 2%-5% and a silt content varying from 1%-4%.

Ecology

''Kalaharituber pfeilii'' is known to form an

ectomycorrhiza An ectomycorrhiza (from Greek ἐκτός ', "outside", μύκης ', "fungus", and ῥίζα ', "root"; ectomycorrhizas or ectomycorrhizae, abbreviated EcM) is a form of symbiotic relationship that occurs between a fungal symbiont, or mycobio ...

l relationship with ''Citrillus lanatus'' (

watermelon The watermelon (''Citrullus lanatus'') is a species of flowering plant in the family Cucurbitaceae, that has a large, edible fruit. It is a Glossary of botanical terms#scandent, scrambling and trailing vine-like plant, and is plant breeding ...

), and is suspected to have a number of other possible relationships with other plant species. These include ''

Sorghum bicolor ''Sorghum bicolor'', commonly called sorghum () and also known as great millet, broomcorn, guinea corn, durra, imphee, jowar, or milo, is a species in the grass genus ''Sorghum'' cultivated for its grain. The grain is used as food by humans, ...

'', ''

Eragrostis ''Eragrostis'' is a large and widespread genus of plants in the Poaceae, grass family, found in many countries on all inhabited continents and many islands. ''Eragrostis'' is commonly known as lovegrass or canegrass. The name of the genus is de ...

'' spp., ''

Grewia flava ''Grewia flava'', the brandy bush, wild currant, velvet raisin, or raisin tree, is a species of flowering plant in the family Malvaceae, native to southern Africa. A common shrub species, it is spreading into grasslands due to human rangeland man ...

'', several species of

acacia ''Acacia'', commonly known as wattles or acacias, is a genus of about of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa, South America, and Austral ...

, and ''

Cynodon dactylon ''Cynodon dactylon'', commonly known as Bermuda grass, also known as couch grass in Australia and New Zealand, is a grass found worldwide. It is native to Europe, Africa, Australia and much of Asia. It has been introduced to the Americas. Contra ...

''. It is eaten by

meerkat The meerkat (''Suricata suricatta'') or suricate is a small mongoose found in southern Africa. It is characterised by a broad head, large eyes, a pointed snout, long legs, a thin tapering tail, and a brindled coat pattern. The head-and-body ...

s, hyenas, baboons and bat-eared foxes.

Conservation

The current populations of ''K. pfeilii'' are thought to be in deterioration, with possible causes advanced being over-harvesting,

climate change Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in ...

or the land practices used in ''K. pfeilii'' habitats.

Edibility

''Kalaharituber pfeilii'' is eaten by humans. According to a case study by the

Australian National Botanic Gardens The Australian National Botanic Gardens (ANBG) is a heritage-listed botanical garden located in , Canberra, in the Australian Capital Territory, Australia. Established in 1949, the Gardens is administered by the Australian Government's Departme ...

, the fruiting body is eaten by the

Khoisan Khoisan ( ) or () is an Hypernymy and hyponymy, umbrella term for the various Indigenous peoples of Africa, indigenous peoples of Southern Africa who traditionally speak non-Bantu languages, combining the Khoekhoen and the San people, Sān peo ...

and other indigenous peoples of the Kalahari. Some commercial use of the species occurs.

References

{{Taxonbar, from=Q6350157, from2=Q17481264, from3=Q59537209 Fungi of Africa Pezizaceae Monotypic fungus genera Taxa named by James Trappe Pezizales genera