( 764 ) 



the G. Oengaran and the G. Tcliinaja at about 1400 in., e.g-. above Sëpa- 

 koeng In the i*es. Madioen on tbe Wilis-monnlains above Ngèbël between 

 1400 ni. and 2000 ni. (not collected there at a greatei- lieight). In 

 the res. Prabalinga-Pasaroehan on the Tèngger-nionnlains at 2000 m. 

 near Ngadisari. In de res. IJcsoeki on the Idjenphiteau near bivouac 

 Oengoep-oengoep at 1700 m. Up to tlie present tliis species is there- 

 fore known from the res. Bant'u (in Western-Java) to the res. 

 Besoeki (in Eastern-Java) from 700 ni. to 2550 m. above sealevel. — 

 Occurrence: Does not grow socially in Java, but occurs fairly 

 plentifully in some mountain forests e.g. in Western-Java on the 

 G. Gëdé. e c I g i c a 1 conditions: This species has not yet 

 been observed by me in Java on soils, where there is a great, 

 permanent dearth of water nor where there is physiological drought 

 resulting from a large saline content, nor on soils i-ich in lime and 

 common salt; neither does the species grow on soils which are 

 periodically liable to strong dessication. It grows almost exclusively 

 on permanently damp, fertile, volcanic soils, rich in humus, in close 

 shady mountain forests of high trees and consistijig of a great 

 number of species. In the hot plain, even in permanently humid 

 districts, the species does not occur. The lowest station is in a 

 ravine in Eastern-Java at about 700 m., the highest is at nearly 

 2550 m. above sealevel in Central-Java. I feel obliged to consider 

 the possibility of the occasional, be it very exceptional, occurrence 

 of Acer ntveuni in physiologically dry, saline soils, in consequence 

 of a herbarium note of Junghlhn, found by me in 's Rijks Herbarium, 

 and referring to a specimen, collected by this naturalist on the 

 Diëng-plateau at about 2000 m. near the Kawah-Tjondro-dimoeko. 

 I have here as yet no other data at my disposal, which would 

 show with certainty, whether this species does not only occur in 

 Java "near", but also "on" such soils. — Lea f f all: At the 

 same moment there stood in the same locality (in the same forest, 

 in close proximity to each other) two individuals of apparentl}^ 

 the same age. On the 2"'' of June 1898 one of these was in full 

 (old) leaf, while the adjoining specimen w^as practically without 

 leaves, excej)! one branch which bore young foliage. On March 

 23''<* 1893, near Tak(')ka, one of the trees (of this species), which 

 had been numbered for the {)urpose of the investigation, was 

 completely without leaves, although it stood in the midst of tree 

 species, which were then nearly all in full foliage. — Time of 

 f lowering and fruiting: Flowers were collected in June and 

 in July, August, Se|)t. and Nov. — Habitus: A forest giant, which 

 immediately reveals its presence, even in the thickest virgin forest, 



