Question: Among Bursera and Berkheya, which can be found in South Africa?

full_context: Document 1: Brachystelma: The genus Brachystelma R. Br. (Apocynaceae: Asclepiadoideae - Ceropegieae) is represented by over a hundred species in the world, chiefly distributed in South Africa, South-East Asia and Australasia. In India, 17 species are known to occur, of which nine are endemic.
Document 2: Jaborosa: Jaborosa is a genus of flowering plants in the family Solanaceae, the nightshades. There are about 23 species, all native to South America, where they are distributed from Peru to Patagonia. Most occur in the Andes. Most can be found in Argentina and ten are endemic to the country.
Document 3: Berberis aristata: Berberis aristata, also known as Indian barberry, "chutro" or tree turmeric, is a shrub belonging to the family Berberidaceae and the genus "Berberis". The genus comprises approximately 450-500 species of deciduous evergreen shrubs and is found in the temperate and sub-tropical regions of Asia, Europe, and America. "B. aristata" is native to the Himalayas in India and in Nepal. It is also naturally found in the wet zone of Sri Lanka.
Document 4: Berkheya: Berkheya is a genus of flowering plants in the aster family, Asteraceae, and the subfamily Carduoideae, the thistles. It is distributed in tropical Africa, especially in southern regions. Of about 75 species, 71 can be found in South Africa.
Document 5: Lindera: Lindera is a genus of about 80-100 species of flowering plants in the family Lauraceae, mostly native to eastern Asia but with three species in eastern North America. The species are shrubs and small trees; common names include spicewood, spicebush, and Benjamin bush.
Document 6: Buddleja: Buddleja, or Buddleia (also historically given as "Buddlea"), commonly known as the butterfly bush, is a genus comprising over 140 species of flowering plants endemic to Asia, Africa, and the Americas. The generic name bestowed by Linnaeus posthumously honoured the Reverend Adam Buddle (1662–1715), an English botanist and rector, at the suggestion of Dr. William Houstoun. Houstoun sent the first plants to become known to science as buddleja ("B. americana") to England from the Caribbean about 15 years after Buddle's death.
Document 7: Bupleurum: Bupleurum is a large genus of annual or perennial herbs or woody shrubs, with about one hundred and ninety species, belonging to the Apiaceae family. The full size of its species may vary between a few cm to up to 3 m high. Their compound umbels of small flowers are adorned with bracteoles that are sometimes large and may play a role in attracting pollinators. Rare among Apiaceae are the simple leaves, bracts (if present) and bracteoles. The genus is almost exclusively native in the Old World Northern Hemisphere, with one species native to North America and one species native to southern Africa.
Document 8: Carduus: Carduus is a genus of flowering plants in the aster family, Asteraceae, and the tribe Cynareae, one of two genera considered to be true thistles, the other being "Cirsium". Plants of the genus are known commonly as plumeless thistles. They are native to Eurasia and Africa, and several are known elsewhere as introduced species. This genus is noted for its disproportionately high number of noxious weeds compared to other flowering plant genera.
Document 9: Bursera: Bursera, named after the Danish botanist Joachim Burser (1583-1639), is a genus with about 100 described species of flowering shrubs and trees varying in size up to 25 m high. They are native (often for many species endemic) to the Americas, from the southern United States south through to northern Argentina, in tropical and warm temperate forest habitats.
Document 10: Ericameria laricifolia: Ericameria laricifolia is a North American species of flowering shrub in the daisy family known by the common name turpentine bush, or turpentine-brush. It is native to the southwestern United States (Arizona, New Mexico, western Texas, southwestern Utah, southern Nevada, southeastern California) and northern Mexico (Chihuahua).
Document 11: Cynareae: The Cynareae are a tribe of flowering plants in the daisy family (Asteraceae) and the subfamily Carduoideae. Most of them are commonly known as thistles; four of the best known genera are "Carduus", "Cynara" (containing the widely eaten artichoke), "Cirsium", and "Onopordum".
Document 12: Adansonia: Baobab is the common name for each of the nine species of tree in the genus Adansonia. The generic name honours Michel Adanson, the French naturalist and explorer who described "Adansonia digitata".
Document 13: Berberidaceae: The Berberidaceae are a family of 14 genera flowering plants commonly called the barberry family. This family is in the order Ranunculales. The family contains about 700 known species, of which the majority are in "Berberis". The species include trees, shrubs and perennial herbaceous plants.
Document 14: Barkleyanthus: Barkleyanthus is a monotypic genus. of flowering plants in the aster family, Asteraceae, containing the single species Barklyanthus salicifolius, a plant formerly classified in the genus "Senecio" It is native to North and Central America, where its distribution extends from the southwestern United States to El Salvador. Its common names include willow ragwort, willow groundsel, Barkley's-ragwort, and jarilla.
Document 15: Centaurea: Centaurea ( ) is a genus of between 350 and 600 species of herbaceous thistle-like flowering plants in the family Asteraceae. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere; the Middle East and surrounding regions are particularly species-rich. Common names for this genus are centaury, centory, starthistles, knapweeds, centaureas and the more ambiguous "bluets"; a vernacular name used for these plants in parts of England is "loggerheads" (common knapweed). The "Plectocephalus" group – possibly a distinct genus – is known as basketflowers. "Cornflowers" is used for a few species, but that term more often specifically means "C. cyanus" (sometimes also called "basket flower"). The common name "centaury" is sometimes used, although this also refers to the unrelated plant genus "Centaurium".
ground_truth: Berkheya