Which genus consists of more species, Malus or Bertolonia?
Malus Malus ( or ) is a genus of about 30–55 species of small deciduous apple trees or shrubs in the family Rosaceae, including the domesticated orchard apple ("M. pumila"). The other species are generally known as crabapples or wild apples.
Berteroa incana Berteroa incana is a species of flowering plant in the mustard family, Brassicaceae. Its common names include hoary alyssum, false hoary madwort, hoary berteroa, and hoary alison. It is native to Eurasia and it has been introduced to western Europe and North America. It is listed as an invasive noxious weed in some areas of United States.