92 



Coll. J. J. S. in suo horto, March 1913. 

 Habitat Zanzibar. 



The first tlowers, of a stout inflorescence, show 3 and 5 sta- 

 mens instead of 2. 

 This plant is cultivated at Buitenzorg in three varieties: 



a) with light-blue violet flowers. 



b) with violet-purple flowers. 



c) with brilliant dark blue violet flowers, and foliage- leaves 

 which show slight but distinct differences from a and b. 



The plant sub b produces very much seed, which readily 

 germinates and has a great constancy of colour, whereas the 

 others a and c, though fructifying now and then, apparently 

 never multiply spontaneously '). 



The supernumerary stamens have as yet been observed only in c. 



Compositae. 



Wedelia biflora DC. 



Coll. Mr. C. A. Backer, Assam bagoes, Bezoeki, Java. May 1913. 



Habitat Malaya.. 



Prolification of the flowerheads. Leaves of the involucre and pa- 

 leae very large and green. From the axils of many of these spring 

 peduncles terminating in (secondary) headlets or „chickens" 

 which in their turn produce strongly developed involucre-bracts 

 and paleae. In the axils of the latter there are small buds to 

 be seen, too young, however, to show whether they are florets 

 or incipient (tertiary) headlets (fig. 14). 



Witchb rooms (continued-)). 



Asparagus (racemosus Wild.?). 

 Coll. J. J. S. in horto bog. 1909. 

 Habitat the Tropics. 



Alchornea rugosa Muell. Arg. 



1) The usual way of multiplication is by means of lealcuttings. 



2) Our first list in this publication 2e Serie IV, p. 175. 



