137 



31. Tfiespesia populnea So/and. 



Small tree, spread throughout Java on sandy beaches, espe- 

 cially in the Barringtonia-formation. The reproduction is effect- 

 ed by the capsules whose pericarp bursts into 5 valves, there- 

 by separating from the tough fibrous indehiscent endocarp 

 which encloses several seeds. This endocarp possesses floating 

 power because the fruit-cavity is not entirely filled up by the 

 seeds; the seeds themselves also can float on sea-water ''). 



Young specimens (as appears from an annotation made by 

 Valet on). 



Guttiferae. 



32. Calophyllum inophyllum L. See p. 44, No. 6. 



On the eastern side. 



Lecythidaceae. 



33. Barringtonia <jsiciticd Kurz. See p. 43, No. 5. 



34. Barringtonia insignis Miq. 



Tree of dark constantly humid forests, spread throughout 

 Java from the plains up to 6(X) m. above sea-level. It is 

 rather numerous in the south-western part of the Residency 

 of Bantam (|ava) which is adjacent to the Sunda Straits. 

 The reproduction is effected by the fruits, on the mode of 

 spreading of which nothing is known. 



The tree never afterwards having been found on the island 

 the correctness of the determination is somewhat liable to 

 doubt. But it cannot be controlled, materials being lacking. 



Convolvulaceae. 



35. Ipomoea pes caprae Sw. See p. 48, No. 7. 



36. Ipomoea spec- 



Verbenaceae. 



37. Premna integrifolia L. 



Erect shrub spread throughout Java on sandy or clayey 

 (provided not-swampy) beaches, moreover in many localities 

 in the interior to many kilometers from the sea. The repro- 

 duction is exclusively effected by the juicy shining black 

 drupes possessing each a 1 4-seeded pyrene. These pyrenes 



l ) See Schimper, Indo-Malayische Strandflora, pp. 159, 163- 



