135 



22. Erythrina variegata L. var. orientalis Men. See p. 46, No. 1. 



Young specimens (as appears from a note of Dr. Vale ton). 

 It does not appear where these were found. 



23. Mucuna acuminata D. C. 



Twining shrub, spread throughout Java from the plains up 

 to 1400 m. above sea-level, on forest-borders, in thickets 

 and light forests, often also on river-sides, which in Java are 

 frequently bordered by thickets and trees. The reproduction 

 is effected by the seeds which seem sometimes to possess 

 floating power, sometimes not '). As a rule the pods burst 

 before falling off. Ripe pods which by some cause have fal- 

 len before bursting, possess floating power, because of the 

 fruit-cavity not being entirely filled up by the seeds. 



Zwarte Hoek. 



24. Canavalia rosea D. C. See pp. 89 and 92, No. 8. 



Zwarte Hoek. 



25. Vigna marina Merr. See pp. 89 and 93, No. 9. 



On the eastern side. 



Euphorbiaceae. 



26. Macaranga tanarius M. A. 



Small tree, spread throughout Java from the plains up to 

 1400 m. above sea-level, in thickets, secondary forests 

 and the lighter parts of primeval forests. The tree is not 

 particular as regards the fertility of the soil, it thrives as 

 well on arid calcareous rocks and in other very stony 

 localities as in fertile ravines and in village groves. The 

 reproduction is effected by the fleshy fruits which are eaten 

 by birds, i.a. by Ca/ornis strigatus Horsf. ( C. chalybea 

 Horsf.). The seeds found in the intestines of a bird of this 

 species shot on Krakatao were sown by Docters van 

 Leeuwen in the Buitenzorg Botanical Garden and grew up 

 into trees 2 ). For the value of this experiment see p. 71. 



On the eastern side. 



1) Possibly this depends on the degree of desiccation. I saw some fresh ripe 

 seeds of this species sink at once in sweet water but S c h i m p e r [Indo-Malayische 

 Strandflora (1891), p. 164] states that seeds of Mucuna possess floating power because 

 of the seed-cavity not being entirely filled up by the embryo. 



2 ) Dr. W. Docters van Leeuwen, The Vegetation of the Island of Sebesy, 

 situated in the Sunda-Strait, near the Islands of the Krakatao-group; in the year 1921, 

 in Ann. |ard. Buitenzorg XXXII (1923), 160, 



