360 REVIEW. 



system. In nomenclature the Vienna Code is followed rather 

 closely, but, as to accepted specific names, not invariably. No 

 attempt seems to have been made critically to study the various 

 cases of synonymy, and few new combinations are made. A 

 strict interpretation of the Vienna Code would necessitate the 

 acceptance of different specific names in an appreciable percent- 

 age of cases. Very few new forms are described. 



The work is unequal in its treatment of various groups. In 

 some cases the species are simply enumerated under their proper 

 genera in the form of analjrtical keys, while in others more 

 critical enumerations are included, with literature references, 

 synonyms, native names, and other data. Where recent mono- 

 graphs were available these have been followed closely as to the 

 Javan forms. In most families, however, no recent monographs 

 are available, and the data given under these of necessity have 

 been compiled by the author. However, he has had the assist- 

 ance of many eminent European specialists in working up the 

 material in various families. Special attention is given to the 

 mountain flora throughout the work. 



The "Exkursionsflora von Java" should prove to be of the 

 very greatest value to residents of Java who are at all interested 

 in the rich vegetation of that island, but it has a much wider 

 application. It will, in fact, prove to be of great assistance to 

 students of the entire Malayan-Polynesian flora, in the vast area 

 extending from the Malay Peninsula to Polynesia and including 

 the Philippines. As to the Philippines practically every family 

 found in the Archipelago should be determinable by the use of the 

 analytical key given by Doctor Koorders, as well as approximately 

 90 per cent of the genera found in the Islands. As to species, 

 with an endemic element in the Philippines averaging about 40 

 per cent, comparatively few of our forms can be determined to the 

 species, by this work, excepting in the case of the low country 

 flora. In the settled areas the great majority of the species are 

 of very wide distribution, and of these at least 50 per cent should 

 be determinable by the keys given by Doctor Koorders. Ap- 

 proximately the same figures will apply to the Malay Peninsula 

 and to most of the islands in the Malay Archipelago. 



Including introduced and cultivated forms, a total of about 

 4,930 species are considered, distributed into about 1,560 genera, 

 in 194 families, which gives botanists additional definite data 

 for comparisons of temperate and tropical floras of restricted 

 areas. In this connection it is of interest to note that in the 



