MISSOURI BOTANICAL GARDEN BULLETIN 127 
from a short distance, and the blooms are best brought out 
when massed against a background; in any case they should 
always be kept away from the sky-line. 
Exochorda grandiflora.—This is a native of Japan and 
is commonly known as the pearl-bush. Clusters of pure 
white flowers are produced in May and June. This shrub is 
aS to transplant but when mature attains a height of 10 
eet. a 
Hibiscus alba.—This shrub is sometimes called the althaea 
or rose of Sharon. Botanically, Althaea is the generic name 
for the hollyhock and the rose of Sharon should be known 
as the hibiscus. The varieties known as “Jean d’Arc,” “Lady 
Stanley,” and “alba pleura,” are all white-flowered. As 
shrubbery subjects they do particularly well in St. Louis, and 
coming at a time when flowering material is rather scarce 
(August and September) makes them very desirable. The 
hibiscus tend to grow upright and do not spread much, and 
because they stand clipping well are much used for hedges. 
In height they range hors 8 to 12 feet. 
Philadelphus—The common name for Philadelphus is 
syringa or mock-orange, but here, as in the hibiscus, there 
is aconfusion of terms. Syringa is the generic name for the 
lilac and the shrub should be spoken of as the mock-orange. 
P. coronarius, P. grandiflorus, and P. Gordonianus are per- 
haps the best varieties, but P. Lemoineii erectus is also good, 
being from 6 to 8 feet high with a creamy white flower. As 
garden subjects they are valuable because of their height, 
their flowering season in June, and their masses of fragrant 
white flowers. The Philadelphus is probably one of the com- 
monest shrubs grown in this locality but the foliage, con- 
trasted with that of the hibiscus, which is a rich, dark green, 
presents a parched appearance in late summer. For this 
reason it should be used for the background or in places 
where it will not be conspicuous late in the season. 
Rhodotypos kerroides or White Kerria.—This is a grace- 
ful shrub, a native of Japan, and valuable because of the 
number of small white flowers which come a few at a time, 
but continue blooming all summer. When well grown the 
plant becomes several feet tall, and while not showy is very 
attractive. 
Sambucus.—In the sambucus or elderberry we have one 
of the most rapid-growing of the garden shrubs. Besides the 
large trusses or panicles of white flowers which bloom in May 
or 3 Pas the plants are also attractive when the elderberries 
become ripe in late summer. The variety, S. nigra aurea, is 
often used because of its golden foliage. Sambucus is a gross 
