IV. Costus cylindricus Rose. 
Legit Tu. Vatrron, cult. in horto bog., March 1917. 
Habitat Trinidad. 
The inflorescence bears a rosette of ordinary-though smaller-’ 
leaves at top, in the same way as a pine-apple (fig. 8). 
V. Curcuma Zeodaria Rxb. 
Legit Tu. Vaueton, October 1918. 
Habitat Java and elsewhere (vide ,New Notes” p. 59). 
Inflorescence two-topped. 
The spike is first cylindrical and enveloped in two sheaths. 
This portion is 14 ¢.M. long. Then a sudden flattening sets 
in like a fasciation. A groove, gradually deepening and going 
up to 11 ¢.M. induces a splitting into two tops. These tops 
rise but a little way above the point of division but are sur- 
passed by the bracts which rise up as much as 3 ¢.M. 
The cicinni are, each with its pouching bract, paired and 
the pairs are decussate: first two on each of the four sides, 
higher up two on each of the flattened sides only, the upper- 
‘most pairs being placed in the plane of fasciation. 
It deserves attention that at the base of the inflorescence 
all the bracts join their margins, next follows a portion on 
which the margins not only unite but also join the midribs of 
the higher, alternating leaf-whorl. Next follows a portion on 
which only the bases of the leaves grow to gether. Not until the 
stemtops become separate, does every coalescence stop. 
Also some of the flowers examined proved somewhat affected 
by the process of flattening and fission, at least their petals. 
The most remarkable thing is the appearance of a petaloid 
appendage at the back of the lip. This appendage is more like 
a petal than a staminode and takes a purely median place. 
Whether this appendage has anything to do with the rudimen- 
tary episepalous staminode must be left undecided. 
