234 СОММЕІЛМ Е. 
The petioles of this species are divided into chambers by 
phragmata which intersect the air-cells forming the greater 
part of its bulk. The organization of these partitions is 
precisely that of Eriocaulonez, but of greater regularity, 
consisting of large pentagonal or polyagonal cells, at the dif- 
ferent angles of which, there are tri-angular apertures in the 
tissue, the apices of these angles invariably point towards the 
centre of the larger cells, their edges are most distinct, I am 
inclined to think them apertures, lsź from their colour being 
‚ always the same as that of the field in which they are viewed, 
2nd from the remarkable distinctness of their edges, 3rd 
from being invariably destitute of the viridescent corpuscles, 
4th because when the cells are torn, no membrane what- 
ever can be traced across these openings. 
COMMELIN&. 
1. Commelinee. 
Caulibus laxis гадовиугасісазі, junioribus striatis. Foliis dis- 
tantibus petiolatis, acu o-lanceolatis, 10-12 nervis, subtus 
glaucis, petiolis а ЧОН, vaginarum apicibus ciliatis. 
Floribus paniculatis, pulchre cyaneis, conspicuis, paniculis folio 
cordato-ovato conduplicato ad originem ramorum, paucifloris. 
Cal. 3-sepalus, sepalis membranaceis. Pet. 3, inzequalia, 2 
superiora majora. Stam. 6, quorum 3 fertilia, 1 majore sagit- 
tato, 3 reliqua abortientia, connectivum mere gerentio. Stylus 
filiformibus tenuissimus. Stigma simplex. 
Hab. In aquosis Mergui : September, 1834. Merg. Herb. 301. 
2. Tradescantia panicutata Rozb. 
Decumbens radicansque. Caulibus attenuata pilosa. Va- 
ginar. marginibus ciliatissimis. Fol. lanceolatis acuminatis 
supra scabris. Paniculis racemosis terminalibus densis, sub- 
ovatis; floribus albido-purpurascentibus. Cal, З sepalis, extus 
