196 
J/onocotyledons 
All of the plants having embryos with one seed-leaf (Mono- 
cotyledons), and with petals (when present) in 3’s, are north of 
the Rock Garden and west of the Brook. * 
| 
‘hey comprise the Lily, 
Iris, Canna, Grass, Orchid, and other Families. 
Note that there are no monocotyledons trees hardy in this cli- 
mate, and only a few shrubs, such, for example, as Smilax rotundi- 
folia, which forms a clipped hedge along a portion of the north 
boundary of this group. 
The hedges of ornamental grasses at the south end of the Mono- 
cotyledons include Blue Fescue (Festuca ovina glauca), Nar- 
row-Leaved Eulalia (A/iscanthus sinensis gracillimus ), Awnless 
EFulaha (Af. saccharifer), and Banded Eulalia (17. sinensis zeb- 
rinus). The hedge on the east side of the paved walk partly sur- 
a 
rounds a collection of grasses of economic and horticultural interest. 
Lhe Bamboos are represented in the collection by Arundinaria 
japonica (also known as Sasa japonica, and formerly as Bambusa 
metake, and by other names). Also by Sasa chrysantha, Sasa 
pygmaca, and Arundinaria fastuosa, all four of which are fairly 
hardy in this climate.! 
Lhe fris—Bearded, Siberian, and Southern United States species 
—are in beds north of the Cannas. The Japanese Tris are along 
the entire length of the Brook and on the shore of the Lake, in the 
Japanese Garden. 
— 
In passing south, through the Systematic Section, one passes the 
following six features on the left: 
I’X PERIMENTAL GARDEN 
At the left (east), as one passes down through the Garden from 
the Polygonales toward the Heaths (Ericales), is the Eaperimental 
Garden, located south of the Conservatories and devoted to work 
in Plant Pathology, P 
— 
ant Breeding (Genetics), and other experi- 
mental work. This garden is not open to the public. It is en- 
closed by a fence covered with Japanese Honeysuckle, and between 
the paved walk and this fence is a border planting of horticul- 
tural varieties of Tulips. The plants in the border are changed 
from time to time. 
