This is an enumeration of the seed plants (excluding monocots) found in tropical Singapore. It includes nearly 1,300 species of naked-seeded plants and dicots which are native or naturalised, and over 520 species which are commonly cultivated in Singapore and adjacent islands. They are systematically arranged in 142 families in this book. An alphabetical list of the families can be found in the beginning of the book. There are brief descriptions on the families and short diagnoses and notes to the species of the genera. Keys to the families and genera of most families are also provided. Nearly all the families are illustrated with at least one line drawing. Some of the larger families, such as composites and legumes, are accompanied with 10 to 20 drawings. They generally depict the common or renowned examples.