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points, the heaviest precipitation occurring in the western portion 

 of the island where the famous Buitenzorg gardens are situated. 

 This great range of elevation combined with the differences in 

 rainfall results in a marvellously rich and varied flora. It is said 

 that there are over fifteen hundred species of trees in the island, 

 which in area is little if any larger than England. 



Much of my collecting was done in the neighborhood of 

 Buitenzorg and on the Gedeh, a mountain upon which is situated 

 the mountain station Tjibodas, where I spent about a month. 



Goebel over twenty years ago visited Java and called attention 

 to some remarkably interesting liverworts, among which was the 

 new genus Treiibia, one of the largest and most striking forms 

 known. Schiffner (Hepaticae der Flora von Buitenzorg. Erster 

 Band. Leiden, 1900) has described the thallose forms, among 

 which are many new species, but he has not yet published a 

 complete list of the foliose liverworts nor of the Anthocerotes. 

 No doubt many interesting forms will reward further explorations. 



As in other tropical countries, the greatest profusion of liver- 

 worts does not occur in the hot lowlands but in the cooler and 

 very moist mountain districts. Nevertheless, many striking 

 species are common about Buitenzorg, whose elevation is between 

 two and three hundred meters. 



My collections were mostly confined to the thallose liverworts, 

 as these were the ones I wished to study especially. The foliose 

 species, however, are extremely abundant and include a great 

 many striking and beautiful forms. Unfortunately the identi- 

 fication of most of these is very difficult. 



The botanical garden of Buitenzorg lies but a few miles from 

 the base of a very striking volcanic cone, the Salak, and nearly 

 every afternoon rain clouds gather over the peaks of this land- 

 mark and a violent thunder storm sweeps over Buitenzorg, delug- 

 ing everything and followed by a marked fall in temperature. 



These daily drenchings cause a marvellous growth of all kinds 

 of vegetation and liverworts luxuriate in the steamy hot atmo- 

 sphere. The garden itself affords many interesting species and the 

 densely shaded gullies and plantations everywhere are crowded 

 with bryophytic growths. Several species of Riccia, R. Treu- 



