question: Which one is native to tropical Africa,  Nephrolepis or Antidesma?
answer: Antidesma
context: Title: Sabiceeae
  Passage: Sabiceeae is a tribe of flowering plants in the Rubiaceae family and contains about 164 species in 7 genera.  Its representatives are found in tropical Africa, Madagascar, Sri Lanka, and from Mexico to tropical America.  The genus "Sabicea" is one of the rare genera in Rubiaceae that occurs both in tropical Africa and tropical America.
  Title: Morus mesozygia
  Passage: Morus mesozygia, known as black mulberry or African mulberry, is a small to medium sized forest tree of Tropical Africa.  Its leaves and fruit provide food for the mantled guereza, a colobus monkey native to much of Tropical Africa, and for the common chimpanzee of West and Central Africa.  It is also a commercial hardwood.
  Title: Cnestis polyphylla
  Passage: Cnestis polyphylla, or itch pod, is a liane or scrambling shrub belonging to the family Connaraceae and occurring south from Kenya in East Tropical Africa through Mozambique and Zimbabwe to Southern Africa where it is found in coastal and escarpment forest in Limpopo, Mpumalanga, Swaziland and KwaZulu-Natal, and further south to the Eastern Cape.  It also grows on the Indian Ocean islands of Madagascar, Mauritius and Réunion.  The genus has at least 13 species with many still unresolved.  They are distributed mainly in tropical Africa and nearby islands, but extend to SE Asia and China.
  Title: Oeceoclades ugandae
  Passage: Oeceoclades ugandae is a terrestrial orchid species in the genus "Oeceoclades" that is native to parts of tropical Africa, including west tropical Africa (Ghana and Ivory Coast), west-central tropical Africa (Gulf of Guinea islands and the Democratic Republic of the Congo), northeast tropical Africa (Ethiopia), and east tropical Africa (Kenya and Uganda).  It was first described by the British botanist Robert Allen Rolfe in 1913 as "Eulophia ugandae" and later transferred to the genus "Oeceoclades" in 1976 when Leslie Andrew Garay and Peter Taylor resurrected and revised that genus.  The English botanist V.S. Summerhayes treated this species as a synonym of "O. latifolia", but Garay and Taylor noted that while the two species share a superficial resemblance in the appearance of the labellum, they are distinct in vegetative morphology.  The labellum of "O. ugandae" also has two swellings or protuberances between the lateral and midlobes, a feature that "O. latifolia" lacks.
  Title: Nephrolepis
  Passage: Nephrolepis is a genus of about 30 species of ferns in the family Nephrolepidaceae (or Dryopteridaceae in some classifications).
  Title: Elephantopus scaber
  Passage: Elephantopus scaber is a tropical species of flowering plant in the sunflower family.  It is native to tropical Africa, Eastern Asia, Indian Subcontinent, Southeast Asia, and northern Australia.  It has become naturalized in tropical Africa and Latin America.  Its natural habitat is subtropical or tropical moist montane forests.
  Title: Oeceoclades saundersiana
  Passage: Oeceoclades saundersiana is a terrestrial orchid species in the genus "Oeceoclades" that is native to a large area in tropical Africa.  It can be found in west tropical Africa (Benin, Ghana, Guinea, Ivory Coast, Liberia, Nigeria, and Sierra Leone), west-central tropical Africa (Central African Republic, Cameroon, Equatorial Guinea, Gabon, the Gulf of Guinea islands, Rwanda, and Democratic Republic of the Congo), northeast tropical Africa (Ethiopia), east tropical Africa (Kenya, Tanzania, and Uganda), and south tropical Africa (Angola and Zambia).  It was first described by the German botanist Heinrich Gustav Reichenbach in 1866 as "Eulophia saundersiana".  It was later transferred to the genus "Oeceoclades" in 1976 by Leslie Andrew Garay and Peter Taylor.  Garay and Taylor noted that "O. saundersiana" has a labellum with four lobes of equal size and the pseudobulb is long and cylindrical with two leaves.
  Title: Auguste Chevalier
  Passage: Auguste Jean Baptiste Chevalier (June 1873 in Domfront – June 1956 in Paris) was a French botanist, taxonomist, and explorer of tropical Africa, especially of French colonial empire in Africa that included Côte d'Ivoire.  He also explored and collected plants in South America and tropical Asia.  Chevalier was a prolific contributor to the knowledge of African plants, studying forest trees and their woods, grasses, and agricultural plants of the continent.  Unlike other botanists who studied the plants of tropical Africa, Chevalier also ranged to the floral regions of the Sahara.
  Title: Antidesma
  Passage: Antidesma is a genus of tropical plant in the Phyllanthaceae formally described by Linnaeus in 1753.  It is native to tropical Africa, S + E + SE Asia, Australia, and various oceanic islands.  The greatest diversity occurs in Southeast Asia.
  Title: Maerua angolensis
  Passage: Maerua angolensis is a 10m tall, occasionally deciduous tree of the Capparaceae or caper family, often growing on termitaria and in thickets fringing seasonal watercourses, up to 1800m.  Though never common, it is widespread in tropical Africa and arid regions, being absent from high-rainfall regions.  It is found in Togo, Sudan, Eritrea, Senegal, Tanzania, Uganda, Chad, Ghana, Mali, Mauritania, Cameroon, Kenya, Burundi, Rwanda, Niger, Nigeria, The Gambia, Burkina Faso extending southwards into Angola, Malawi, Zambia, Zimbabwe, Caprivi Strip, Botswana, Namibia, South Africa, Swaziland and Mozambique.  The genus comprises some 57 species, mostly in tropical Africa, but also extending into the Middle East and tropical Asia.
citations: Antidesma Nephrolepis