+ 
and yet they are really distinct from either, and a rigid classifica- 
tion would certainly follow the arrangement of Micheli in D. C. 
Mon. Phan., and constitute each of them a separate order. Liza 
is anomalous, and quite as distinct from the Juncaginez as the 
latter are from Naiadacez. There is an advantage, however, in 
placing closely allied groups under one order, if possible, and I 
therefore follow essentially the arrangement of Bentham and 
Hooker. 
Sub-order I. JUNCAGINEZE. 
Marsh plants with rush-like leaves. Flowers spicate or race- 
mose, perfect. Perianth 4-6-parted; segments in two series. 
Stamens 3-6. Carpels 3 or 6, I-2-ovuled, more or less united 
while immature, dehiscent or indehiscent. Seeds anatropous, em- 
bryo straight. 
I. TRIGLOCHIN. 
Flowers ebracteate, racemose. Perianth segments 3 or 6. 
Carpels 3 or 6, united until maturity. Leaves all radical. 
2. SCHEUCHZERIA. 
Flowers bracteate, racemose. Perianth segments 6. Stamens 
6. Carpels 3, distinct, stem leafy, rush-like; fruit a follicle. 
Sub-order II. LILAEE. 
Marsh plants with cylindrical leaves. Flowers dimorphous, 
solitary and in spikes, moncecious. Perianth none ог a single 
bract. Stamen 1, ovary 1, ovule 1, anatropous. Carpels indehis- 
cent. 
3. LILAEA. Flowers moncecious, the pistillate naked at the 
base of the leaves, with very long styles, or in close spikes on 
scapes; the staminate in close spikes, on scapes, under a single 
bract. Carpel 1, 1-seeded. 
Sub-order III. NAIADEX. 
Immersed aquatics with flat leaves. Flowers variously ar- 
ranged, perfect, monoecious or dicecious. Perianth of 4 segments, 
or a mere hyaline envelope. Ovaries solitary or distinct, 1-ovuled. 
Carpels rarely dehiscent. Embryo curved or straight. 
5 Potamez. 
Flowers spicate, perfect, bractless. Perianth of 4 segments or 
none. Stamens 4 or 2. Carpels separate, 1-seeded; seeds cam- 
pylotropous. Embryo curved. 
