- 2 — 



important results. Veiy many plants which about ninety years 

 ago had been fou ad by Kûhl and Van Hasselt and were ne ver 

 foLind afterwards, could be collected again. The littoral flora of 

 the southern coast proved to be very différent from that ofSunda- 

 straits. The southern part of the residency is almost entirely 

 covered with secundary woods alternating witli hoemas. Primeval 

 forests are rare. The process of natural reafïbresting could be 

 studied, Many interesting plants were collected. 



One trip was made through the mountainous district north 

 of Buitenzorg. This is an excursion strongly to be recommended 

 to every naturalist possessed of sound legs. The mostly calca- 

 reous hills are honej^combed with caves and for a great part 

 covered with virginal forests of untainted beauty. This région 

 abounds in lianas, orchids and curious saprophytes, on oae day four 

 différent species of Burmannia could be collected. Mono- 

 phyllaea's are in many localities very common. Together with 

 Stauranthera and Epi the m a they seera to be characteristic 

 for calcareous soils. Some very rare plants described by El unie, 

 never found afterwards, were collected hère. The flora of two almost 

 adjacent hills proved to be very différent. The causes of this 

 curious fact are not yet made clear. Hej-e is work to do for 

 geologists and climatologists. 



One excursion was made to Mount Slamat which was 

 ascended from the south. Its slopes are covered by secundary 

 forests from 800 M up to + 1500 M above sea-level. Then 

 follow the primeval woods which reach up as high as 2800 M. 

 From 2800 M up to 3000 M there is a végétation composed of 

 Anaphalis, Gaultheria, Nertera, Cal amagrostis java- 

 nica, Vaccinium varingaefol i u m, scattered Albizzia 

 and a Car ex. The summit is still a very desolate région, where 

 not a green leaf is to be seen. When J u n g h u h n in 1847 climbed 

 the mountain ail végétation ceased at an altitude of + 2600 M. 

 Hence we may conclude that- in the last 65 years the végétation 

 has considerably extended and in future times will reach up to 

 the very summit as is the case with Mount Tjerimai. Above a 

 height of 2000 M no water is more to be found, between 1000 

 and 2000 M it is very abundant. Consequently in the middle 

 zone between 1000 and 2000 M epiphytes are extraordinary nume- 

 rous, especially ferns, orchids and species of Trichospor um. 



