Question: Which genus has more species Tetradium or Schlumbergera?

Context paragraphs:
Euodia (plant): Euodia is a plant genus in the Rutaceae family.  "Euodia" is sometimes misspelled as "Evodia".  The species now included in the genus "Tetradium" were previously included in "Euodia", and may be commonly referred to as euodia.

Schlumbergera orssichiana: Schlumbergera orssichiana is a species of plant in the Cactaceae family.  It is endemic to a small area of the coastal mountains of south-eastern Brazil where its natural habitat is moist forest.  It grows on trees as an epiphyte.  It is in the same genus as the popular houseplant known as Christmas Cactus or Thanksgiving Cactus.

Schlumbergera opuntioides: Schlumbergera opuntioides is a species of plant in the Cactaceae family.  It is endemic to the coastal mountains of south-eastern Brazil where its natural habitats are humid forests and rocky areas.  It is threatened by habitat loss.  It is in the same genus as the popular house plant known as Christmas Cactus or Thanksgiving Cactus.

Schlumbergera kautskyi: Schlumbergera kautskyi is a species of plant in the Cactaceae family.  It is endemic to a small area of the coastal mountains of south-eastern Brazil where its natural habitat is rocky areas.  It is threatened by habitat loss.  It is in the same genus as the popular houseplant known as Christmas Cactus or Thanksgiving Cactus.

Tetradium: Tetradium is a genus of nine species of trees in the family Rutaceae, occurring in temperate to tropical east Asia.  In older books, the genus was often included in the related genus "Euodia" (sometimes written, ""Evodia"" from latin spelling), but that genus is now restricted to tropical species.  In cultivation in English-speaking countries, they are known as Euodia, Evodia, or Bee bee tree.

Melicope: Melicope is a genus of about 230 species of shrubs and trees in the family Rutaceae, occurring from the Hawaiian Islands across the Pacific to tropical Asia, Australia and New Zealand.  The temperate Asian genus "Tetradium" (which sometimes include the tropical "Euodia") is closely related to "Melicope" and is sometimes merged into it.

Schlumbergera microsphaerica: Schlumbergera microsphaerica is a species of plant in the Cactaceae family.  It is endemic to a limited area of the coastal mountains of south-eastern Brazil where its natural habitat is rocky areas above 2600 m .  It is threatened by habitat loss.  It is in the same genus as the popular house plant known as Christmas Cactus or Thanksgiving Cactus.

Gottfried Knebel: Gottfried Knebel (born 1908) was a German botanist.  He was the author of the cactus genus "Opuntiopsis", an invalid name according to the current rules of botanical nomenclature; it is now a synonym of "Schlumbergera".  The species "Mammillaria knebeliana" is said to have been named in his honour.

Schlumbergera: Schlumbergera is a small genus of cacti with six species found in the coastal mountains of south-eastern Brazil.  Plants grow on trees or rocks in habitats that are generally shady with high humidity, and can be quite different in appearance from their desert-dwelling cousins.  Most species of "Schlumbergera" have stems which resemble leaf-like pads joined one to the other and flowers which appear from areoles at the joints and tips of the stems.  Two species have cylindrical stems more similar to other cacti.  In Brazil, the genus is referred to as "Flor de Maio " (May flower), reflecting the period in which they flower in the Southern Hemisphere.

Tetradium ruticarpum: Tetradium ruticarpum is a tree that comes from China and Korea.  It was previously classified in the genus "Euodia" as "Euodia ruticarpa".  The fruit is usually used, denoted sometimes as "fructus".  It has a strong bitter taste, and is used in traditional Chinese medicine (TCM) and is a recognized herb in Kampo.  Both the former genus name and the species name are often misspelled, and the plant usually appears in sources dealing with traditional Chinese medicine as ""Evodia(e) rutaecarpa"".

Supporting paragraphs: Tetradium Schlumbergera
Answer: Tetradium