74 ON THE CLASSIFICATION OF MONOCOTYLEDONS. 
sang ‘should perhaps be rather included in ” the same group with the 
Aroidea, where they are placed by Adrien de Jussieu, Dr. Hooker, and 
es Benth ili 
at the first two “ these five cohorts are aldininici elated to one 
another, whilst we can trace a gradual passage from the Glumales, 
—— the Restialee, aril might well be termed Semiglumales, to the 
mmelynales, so that the two latter may well be united as Enantio- 
basta, though this is premature on our part at this stage of the dis- 
examination of the points of contact of the different authors thus 
reduces the theoretical entities which we gee to consider to the follow- 
a Po: ntede ai eres cadet: (1 3) Restiales, and mre ) 
lumal 
The pores character of Hydrales seems justly to out- 
weigh their ‘shares 6 . The series recognised by Adrien de Jussieu 
from WVaias to Hydrochars seems to indicate affinity. Sachs admitting 
that a may be re from his order Centrosperma, Naiadee 
will remain alone, with hee stierees as close allies, so that we may 
adopt Dr. Hooker’s description of them as “reduced Alismacee,” and 
unite them under his cohort Potamales, with the Polycarpa,the Hydrales 
remaining as’a second and higher cohort of the series Helobia, jetoculack 
by the removal of pee 
under the name Taccales. The undifferentiated embryo of 
Burmanniacee is probably only an adaptive modification, as in Cuscuta, 
their affinities being with Narcissales rather than Gynandra. 
7 and 8. See l and 9. The spadicifloral character of the inflo- 
rescence and the similar habit of Palms and Arales are by no means 
sure guides to affinity. The Palme are most probably related, as 
Zilaeo, by Robert Brown, to the Junce@, and through them to 
. My, Deaton: places Commelynales between Pontederales and 
Jute wie their affinity to Restiales is ines clear that it seems fatal to 
Cohort 2. Potamales. (Orders. Butomex, Triuride, Alismacex, 
io oe Juncaginew, Potamogetonew.) 
Division 2 
Cohort 3. Arales. (Orders, Aroides, Lemnacer, Pandanee, 
Typhacee.) - sae 
* The group 2. ret > 
