46 
Cornus amomum. It is useful perhaps to call attention again to the 
Silky Cornel, Cornus amomum, for it is one of the best of all shrubs 
to plant in this climate near the banks of streams and ponds where 
large masses of foliage are desired to spread out over the surface of 
the water. Examples of this use of this Cornel can now be seen at 
two of the small ponds near the end of the Meadow Road where this 
Cornel is now covered with flowers which will be followed in autumn 
by bright blue fruits; during the winter the purple stems are attract- 
ive. The Silky Cornel is a good plant also to place in front of groups 
of trees and shrubs but it must have room for the free growth of its 
wide-spreading branches, for when crowded by other plants the branches 
become erect and all the character and beauty of the plant is lost. A 
space of not less than twenty feet in diameter is necessary for the 
development of a handsome specimen. 
Zenobia pulverulenta is just opening its flowers. This shrub of the 
Heath Family is a native of the coast of North Carolina where it 
grows along the borders of swamps and, one of the most beautiful 
shrubs of the American flora, is perfectly hardy in Massachusetts 
where it has flourished in the Arboretum for many years. Zenobia is 
related to the Andromedas and is chiefly distinguished by its open, 
campanulate and four-awned anthers. The leaves are deciduous, thickly 
covered with- a glaucous bloom, and the ivory white flowers about half 
an inch long and broad are borne on slender arching stems and are 
arranged in axillary clusters forming terminal racemes from twelve 
to eighteen inches in length and arching from the upper part of the 
branches of the previous year. The form of Zenobia (var. nilida) with 
green leaves which are destitute of a glaucous bloom is a more com- 
mon plant in North Carolina and is equally hardy here in Massachu- 
setts. Zenobia is not common in cultivation in this country but is occa- 
sionally seen in English gardens. 
Tripterygium Regelii. Climbing plants with handsome foliage and a 
conspicuous inflorescence hardy and easy to grow in New England are 
not very numerous, and Mr. Jack’s introduction several years ago of 
this Tripterygium made an important addition to their number. It is 
a near relative of the Bitter Sweets (Celastrus) and a native of Korea 
and Japan where it climbs over rocks and bushes, and often climbs 
with stems fifty or sixty feet long into the tops of trees. The leaves 
are long-pointed, dark green, and often six inches in length. The small 
white flowers are produced in narrow open clusters ten or twelve inches 
long, and they are followed by showy, three-lobed and three-winged 
fruits from half an inch to an inch in length. By pinching the young 
shoots the vines can be grown as a shrub, and in this way it produces 
larger flower-clusters and is more ornamental. There is such a speci- 
men just coming into bloom in the Shrub Collection, where it is also 
growing naturally on the trellis next to the different species of Celastris. 
Periploca sepium. This is another handsome plant which the Arbor- 
etum owes to the labors of Mr. Jack in Korea. It is growing on the 
trellis near the Tripterygium. It is a plant with slender stems, pointed, 
dark green and very lustrous leaves about three and a half inches in 
