116 



shadowed localities especially on not too steep ravine-sides, 

 along rivers and in young secondary forests; locally it is often 

 very common. The reproduction is effected exclusively by 

 the figs which are sessile by pairs in the axils of the leaves, 

 Penzig says nothing about habitat and frequency of 

 this species, nor does he tell whether the trees found bore 

 already figs and whether these figs contained gall-wasps. 



Lauraceae. 



45. Cassytha fi/iformis L. See p. 91, No. 7. 



Penzig says nothing about habitat and frequency of 

 this species. 



Leguminosae. 



46. Albizzia chinensis Merr. (A. stipulate Boiv.) 



Tree, spread throughout Java from the plains up to + 1300 m. 

 above sea-level. It grows in sunny or slightly shadowed 

 localities, especially on periodically very dry soils, in grassy 

 plains, in thickets, in secondary forests, very frequently also 

 along water-courses, locally often in great numbers. The repro- 

 duction is exclusively effected by the seeds. The thin pods do 

 not burst when ripe but break into fragments, each of which 

 contains one or more seeds; these fragments are easily con- 

 veyed by water and over some small distance also by wind. 



About habitat and frequency of this tree Penzig tells 

 nothing. In the Buitenzorg Herbarium there are no materials 

 present collected on this excursion on Krakatao; the tree 

 seems never to have been found back there, if it was found 

 at all. I think it by no means impossible that the specimen 

 in question was wrongly named; it might have been A. 

 retusa Bth., a tree of sandy beaches that in 1908 was found 

 on the beach of Zwarte Hoek. 



47. Canavalia rosea D. C. (In P e n z i g's paper under the name 



of C. obtusifo/ia D. C). See pp. 89 and 92. 



According to Penzig this creeper the only species of 

 the genus found on Krakatao was numerous on the beach 

 of Zwarte Hoek. 



48. Vigna marina Merr. (In P e n z i g's paper mentioned as 



V 7 . /urea D. C. and V. luteo/a D. C). See pp. 89 and 93. 

 Numerous on the beach at Zwarte Hoek. 



