Sawan 221 Series of books is a treasure-trove of strange, unique and fascinating. Each and every explanation in 221 Plants encyclopaedia has been made in a very lucid language keeping in mind the age-group of children. The colourful illustration that goes with the explanation clarifies it all the more. 221 Plants encyclopaedia is surely useful to those, young and old alike, who have a scientific bent of mind and are on the look-out for something new and exciting.