Ee Re ee Ny 
Puate 1985. 
ARENGA LISTERI, Beccari. 
Patmacez. Tribe Arecem. Subtribe Caryoripes. 
+ ae Didymosperma sp., Hemsl. in Journ. Linn. Soc. xxv. 
9 o aatead 
Has. Christmas Island, J. J. Lister, 1887. 
_ Segmenta frondium majora 15-30 poll. longa, segmenta latiora plus 
minus apicem versus dilatata 13 poll. lata (segmentum terminali 
cuneatum bilobum 3 poll. latum) subtus minutissime incano- v. sericeo- 
tomentella, punctis minutis raris brunneis nigrescentibusve notata. 
Panicule rami fl. ¢ gerentes crassitie penne corvine, tempore 
fructifero penne cygni, 10-20 poll. longi. 
The pistillate flower, originating between the staminate ones, is at 
the time of expansion of the latter in a quite rudimentary stage, nor 
would it be reasonable, from our specimens alone, to infer that both 
g and 2 flowers originate from the same rachis, as Sig. Beccari 
points out is the case in the other species of Arenga and Oaryota, the 
flower-bearing branches of the spadix being much stouter and longer 
in those which bear the expanded—or, in our specimen, the more 
advanced—pistillate flowers (without perceptible trace of the lateral 
fallen males), than the branches bearing expanded males. At the 
Same time it is true, as noted above, that a rudimentary pistillate 
flower is present between the males in our specimens.—D. Ouiver. 
Fig. 1. Staminate flower. 2 alyx of same. 3. Anther, back and front. 4 and 
nlarged. 
f a0 8: 
- 5. Pistil flower. 6. Vertical section of ovary. Knlarg 
