Complex sentence: Carl Linnaeus designated "Mammillaria" as a type genus for cactus in 1753, and with at least 145 recognized species, it is the largest and most morphologically variable genus in the cactus family.
Split into simpler sentences: Carl Linnaeus designated "Mammillaria" as a type genus for cactus in 1753. With at least 145 recognized species, it is the largest and most morphologically variable genus in the cactus family.