Each tree is photographed in foliage and the fruit or flowers. Often, in keeping with the authors ideas, there are pictures of the bark which are used in Hong Kong to identify trees whose full extent cannot often be appreciated. Dr Thrower is an academic at the Chinese University of Hong Kong, so also brings a precision and thoroughness to her work that will be of interest to the specialist.
On a related foot-note of interest: at the time of writing, Hong Kong has some 40% of land surface dedicated to national park so there is a reasonably rich variety of trees in the book. (Only Bolivia has more land space dedicated to forest than Hong Kong - although this is perhaps not an overly impressive feat for Hong Kong, only 1,000 square-km total!)
Page 11.1 - British Trees Bibliography - "The International Book of Trees"