This is the first volume of the book which is in the field of botany and it helps the students of this field to be well acquainted with the flora of their country. This volume has 58 families in the kingdom of plants. The families are arranged according to the recent schemes of classification. The information and descriptions embodied in this book are based on plant specimens collected by the author as well as by demonstrators and fourth year students of the Botany Department, College of Science.