48 
Aescuhis parviflora occupies an important place among summer flow¬ 
ering shrubs. This native of the southeastern states is hardy in the 
north, and with abundant space and in good soil will spread into 
great thickets with stems seven or eight feet high. Toward the end 
of July it will be covered with its tall, narrow, erect spikes of small 
white flowers which stand up well above the foliage. 
Cornus paucinervis suffered somewhat in the cold winter of 1917-18, 
as was to have been expected, as it grows naturally at low levels in 
central China where the Orange flourishes and rarely ascends to alti¬ 
tudes of three thousand feet. It has recovered, however, and is now 
in 'flower. If it were a little hardier it would be one of the best sum¬ 
mer flowering shrubs introduced by Wilson from China. It is a shrub 
five or six feet tall with erect stems, small, narrow, pointed leaves with 
only two or three pairs of prominent veins, small clusters of white 
flowers and black fruits. 
July Roses. July is the month when the hybrid Rambler Roses bloom, 
especially those which have been largely influenced by the Japanese 
Rosa Wichuraiana, but in the Arboretum collection there are only 
four species which do not begin to flower until after the first of July. 
These in the order of the opening of their flowers this year are R. stell- 
ata, R. Jackii, R. setigera and R. Wichuraiana. R. stellata, which is 
a native of the mountains of southern New Mexico, is a comparatively 
new inhabitant of gardens, and one of the most interesting and dis¬ 
tinct of American Roses. It is a shrub with slender, pale yellow stems 
armed with long slender spines of the same color, small leaves with 
thick, round, lustrous leaflets, which generally resemble the leaves of 
some western Gooseberry, and deep rose-colored, slightly cup-shaped 
flowers from two inches and a half to three inches in diameter. The 
fruit is dark red, nearly globose, covered with prickles, half an inch 
in diameter, and surmounted by the much enlarged calyx-lobes. Rasa 
Jackii , which is a native of Korea, and one of the Multiflorae Group, 
has long stems which lie nearly flat on the ground, lustrous leaves and 
pure white clustered flowers rather more than two inches in diameter. 
The flowers are larger than those of the Japanese R. multiflora, and open 
two or three weeks later. The Prairie Rose, R. setigera, is well known 
to the inhabitants of the middle states for it is a common prairie in¬ 
habitant from Michigan to Texas. It produces long slender stems 
which can be trained over an arbor or against a building, but this Rose 
looks best when allowed to grow naturally when it forms a wide bush 
of gracefully arching stems. The flowers are produced in wide, many- 
flowered clusters and are light rose pink. This is usually the last Rose 
to open its flowers in the Arboretum, but this year Rosa Wichuraiana 
is several days late. Its long prostrate stems are well suited to clothe 
banks which when the flowers open look as if they had been covered 
with snow. Grown in this natural way it is perfectly hardy, but when 
the stems are trained over an arbor or trellis they often suffer in New 
England from cold; and its hybrids, among which are found some of 
the most beautiful Rambler Roses, are leas hardy here than those 
in which Rosa multiflora has been one of the parents. 
