158 



floating for a year on sea-water, were still fit to germinate *) 

 Docters van Leeuwen guesses 2 ) that the seeds are 

 also spread by birds but gives no grounds for that opinion. 

 I cannot believe that the seeds of any species of Ipomoea, 

 if eaten at all by birds, pass their intestine tract without 

 being destroyed. 



Several scattered specimens. 



29. Ipomoea pes caprae Sw. See p. 48. No. 7. 



Numerous. 



Borraginaceae. 



30. Tournefortia orgente<.i L. fil. See p. 54, No. 8. 



Ernst :i ) states that this shrub was found in 1906 on the 

 south-eastern side of Krakatao. I did not see it there neither 

 in 1906 nor in 1908, but found it in 1906 on Verlaten Eiland. 

 But as both Tr eub in 1886 and Docters van Leeuwen 

 in 1919 found the plant on Krakatao I admit that it might 

 have grown there in 1906 and have been overlooked by me. 

 1 must however decidedly contradict Ernst's statement 3 ) 

 that it formed together with other plants ,,formliche Dickichte" 

 along the borders of the gullies in the interior. 



Verbenaceae. 



31. Prcmna integrifolia L. (Pr. foetida Reinw.). See p. 137, No. 37. 



Scattered specimens. 



32. Clerodendron iiierrnc Giirtn. See p. 151, No. 37. 



A few scattered specimens. 



Rubiaceae. 



33. Ouettarda speciosa L. See p. 138, No. 41. 



A few scattered specimens. 



34. Marine! a citri folia L. See p. 93, No. 16. 



A few scattered specimens. 



1 ) Guppy, Observations of a Naturalist in the Pacific between 1896 and 1899,11531. 



2) Handelingen Eerste Nederlandscli Indisch-Natuurwetenschappeliik Congres (1920), 

 p. 56,-Ann. lard. Bot. Buitenzorg XXX (1921), p. 127. 



3 ) Neue Flora Vulkaninsel KraUatau (1907), p. 32. 



