Which cacti has more species, Cereus or Limnanthes?
Limnanthes Limnanthes, the type genus of the family Limnanthaceae, consists of annual herbaceous plants commonly known as the meadowfoams. The seven species are all native to coastal and adjoining regions (inland valleys, foothills and mountains) of western North America, where they typically grow in marshy habitats, such as the margins of vernal pools. Some are endemic to California
Catharanthus roseus Catharanthus roseus, commonly known as the Madagascar periwinkle, rosy periwinkle or teresita as it is usually named in the southern part of Mexico, specifically in Champotón, Campeche and Mérida, is a species of flowering plant in the dogbane family Apocynaceae. It is native and endemic to Madagascar, but grown elsewhere as an ornamental and medicinal plant, a source of the drugs vincristine and vinblastine, used to treat cancer. Other English names include "Vinca", Cape periwinkle, rose periwinkle, rosy periwinkle, and "old-maid". It was formerly included in the genus "Vinca" as "Vinca rosea".