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
Hylocereus Hylocereus is a genus of cacti, often referred to as night-blooming cactus (though the term is also used for many other cacti). Several species have large edible fruits, which are known as pitahayas or dragonfruits. Whether "Hylocereus" is a distinct genus is uncertain as of July 2013 .