115 



From the axil of the 10th pair of leaves spring panicles of 

 fioioers. 



Higher up the leaves grow smaller and pass into scales. 



The stem ends in a (terminal) panicle. 



This specimen presents accordingly a case of abnormally 

 premature flowering, a phenomenon which we could indicate 

 by „paedogenesis" in accordance with the observation on Melia 

 arguta in some specimens of which already soon after the 

 period of germination the stem terminated in a flower^) 



This premature production of flowers seems neither in Melia 

 nor in Tectona to be of rare occurrence. Culture-experiments 

 in this direction are likely to yield interesting results. 



For curiosity's sake we conclude this description with an 

 information of Mr. Ham's, according to which the natives in 

 Java believe that in every Teak plantation there always shoots 

 up one abnormal tree. 



ACANTHACEAE. 



Justicia procumhens L (= Rostellaria procumbens Nees). 



Garden Dr. Valeton. Aug. 1908. 



Habitat India and the East Indies. 



The spike lengthens to a leafshoot (fig. 19); foliar prolifica- 

 tion of the inflorescence. In one case, see the same figure, the 

 leafy portion passes to a second inflorescence and produces 

 moreover from one of the axils a branch with both leaves and 

 a spike. In the large spike on the left the branch has been 

 drawn too low, in fact it springs from the upper leaf bearing 

 poftion. 



COMPOSITAE. 



GaiUm^lia picta Sweet. 



Coll. J. J. S. in suo horto. Nov. 1908. 



Habitat North America. 



Flower-head with foUaceous bracts. From 7 of these bracts 



1) Receuil des trav. bot. nt^erl. Vol. I, p. 128. 



