question: Which genus contains more species: Fallopia, or Nicandra?
answer: Fallopia
context: Title: Lophodermium
  Passage: Lophodermium is a genus of fungi within the family Rhytismataceae.  The genus contains 145 species and has a global distribution.  Species of this genus are usually observed producing zone lines, conidiomata and ascomata on dead fallen leaves, but at least some are known to colonize living leaves.  In many cases they then live inside the colonized leaf as a symptomless endobiont, where they are regarded as detritivores utilising dead plant matter.  In a few cases they may kill all or part of the leaf prematurely, and there is a substantial literature dealing with those species as plant pathogens.  The genus infects many different plant families but with a notable concentration in the family Pinaceae; many "Lophodermium" species are restricted to a single host genus (or even species), but some, particularly those infecting grasses, may infect several genera.  Some are economically important plant pathogens, such as those that cause needlecast disease in European Black Pine, Scots Pine and Red Pine in forestry and christmas tree plantations.  In these species, notably "L. pinastri" and "L. seditiosum", the fungal spores disperse and infect the pine needles in late summer, which turn brown by the following spring and then fall off.
  Title: Calyptocephalellidae
  Passage: The Calyptocephalellidae are a family of toads found in Chile containing two genera, "Calyptocephalella" and "Telmatobufo".  The "Calyptocephalella" genus contains one species, "C. gayi", the helmeted water toad, which is a large aquatic toad weighing up to 0.5 kg .  The "Telmatobufo" genus contains four species, "T. australis", "T. bullocki", "T. ignotus", and "T. venustus".  All species within the family are considered threatened, with "T. bullocki" and "T. venustus" being classified as critically endangered.
  Title: Megalurus
  Passage: Megalurus is a genus of passerine bird in the family Locustellidae.  The genus was once placed in the Old World warbler "wastebin" family Sylviidae.  The genus contains six species also known as the typical grassbirds.  The genus is distributed from northern China and Japan, to India in the west, and Australia in the south, with most species being located wholly or partly in the tropics.  The genus is also sometimes considered to include the genus "Bowdleria", which holds the fernbirds of New Zealand.  The most widespread species, the tawny grassbird, ranges from the Philippines to southern New South Wales, whereas the Fly River grassbird is restricted to swampland in the southern part of New Guinea.  The natural habitat of the typical grassbirds is, as the name suggests, wet grasslands, swamps and other marshlands.  Some species exist away from water in tall grasslands, heathlands, and forest clearings.  Some species have adapted to the margins of rice fields and gardens.
  Title: Ceratozamia
  Passage: Ceratozamia is a genus of New World cycads in the family Zamiaceae.  The genus contains 27 known currently living species and one or two fossil species.  Most species are endemic to mountainous areas of Mexico, while few species extend into the mountains of Guatemala, Honduras and Belize.  The genus name comes from the Greek "ceras", meaning horn, which refers to the paired, spreading horny projections on the male and female sporophylls of all species.
  Title: Fallopia
  Passage: Fallopia is a genus of about 12–15 species of flowering plants in the buckwheat family, often included in a wider treatment of the related genus "Polygonum" in the past.  The genus is native to temperate and subtropical regions of the Northern Hemisphere.  The genus includes herbaceous perennial plants, herbaceous vines, and woody vines.
  Title: Nicandra
  Passage: Nicandra is a monotypic genus of flowering plants in the nightshade family containing the single species Nicandra physalodes.  It is known by the common names apple-of-Peru and shoo-fly plant.  It is thought originally to have been native to Peru (known elsewhere as an introduced species and sometimes as a weed) and is found nowadays as a ruderal species in tropical, subtropical and, to a lesser extent, temperate areas all over the world.  It has also long been cultivated as an ornamental plant for its attractive flowers and curious fruits (the latter sometimes dried for use in floral design) and has been adopted into the traditional medicine of countries far-removed from its original home.
citations: Nicandra Fallopia