270 
FLORA OF THE SUNDRIBUNS. 
Leaves 2 -ranked, the sheaths open in front and with a 
ligule at the top behind ; fruit a grain with seed adnate 
to pericarp ; flowers between a glume and a palea 
(Grasses) , . , , , . >,,12 
Sedges with leaf-blades unarmed, sometimes absent j nuts 
minute and not 6 ribbed . . ... 5 
Sedges with leaf-blades spiny on edges and mid-rib 
beneath j nuts large, black, hard, 6-ribbed 275. Scirpodendron. 
Intermediate glumes of aspikelet containing hermaphrodite 
flowers usually numerous, always more than the 1^2 
lowest empty glumes . , . . ,6 
Intermediate glumes of aspikelet containing hermaphrodite 
flowers always few, never more numerous than the 2 or 
8. 
more lowest empty glumes . . 
6. Flowering glumes 2-ranked .... 
Flowering glumes arranged spirally 
7. Spikelets arranged in an open inflorescence 
Spikelets densely clustered in a close head 
the spikelet deciduous 
Rachilla of the spikelet persistent 
Rachilla of the spikelet deciduous 
Fruit flattened laterally 
Fruit 3-cornered or flattened dorsally 
(6) Base of style constricted cr jointed 
Base of style continued into the fruit 
Stem leafy below , 
Stem leafless . , ^ . 
(3) Stamens 6 . , . . 
Stamens not more than 3 
Glumes firm and chartaceous 
Glumes thin and membranous 
14. (12) Spikelets deciduous from their pedicels or falling with 
them ; perfect spikelets with 2 heteromorphous florets, 
the Upper hermaphrodite, the lower male or neuter 
Spikelets continuous with their pedicels and breaking off 
so as to leave the persistent or subpersistent glumes* on 
the pedicel, or if falling entire not composed of 2 hetero- 
morphous florets , , . . 
15. Rachis not continued beyond terminal spikelet 
Rachis continued beyond the terminal spikelet 
220. C h am ser aphis. 
10 
II. 
12. 
*3 
214. Cladium. 
7 
. . 10 
, . 8 
rachilla of 
207. Kyllinga. 
9 
210. Mariscus. 
208. Pycreus. 
209. Cyperus. 
above the fruit , ii 
• 2Tg. Scirpus, 
212. Fimbristylis, 
. 211, Eleocharis. 
. 13 
14 
. 221. Oryza. 
. 222, Leersia. 
/J 
23 
i6 
