63 
autumn, which grows on the sand dunes of Lake Michigan and is 
known in gardens as the Waukegan Prostrate Juniper. There are large 
beds of J. horizontalis in the general Juniper Collection. 
Juniperus procumbens. This is the best known of the prostrate 
Junipers which Japan has sent to the gardens of the west. It is a 
plant with wide-spreading procumbent stems, blue-green, sharplj^ 
pointed leaves marked on the upper surface by two white lines. The 
fruit is not known. This Juniper finds a place in nearly every Japan- 
ese garden, but it must be a rare and probably local plant in its dis- 
tribution as a wild plant was not seen . by Wilson during his ex- 
tended travels in Japan. It is said to have been introduced into Great 
Britain before the middle of the last century but was soon lost from 
European gardens until it was reintroduced in 1893. This Juniper is 
largely used as a garden plant in California where it is imported from 
Japan, and less commonly in the eastern states. It is perfectly hardy 
and well established in the Arboretum, and can be seen with the other 
Junipers. This Japanese Juniper is closely related to the prostrate 
Juniper of western China and the Himalaya J. squamata^ a plant with 
awl-shaped, sharply pointed leaves in clusters of three, and dark 
purple-black berries. Plants from western China can be seen in the 
Arboretum. 
Juniperus chinensis, var. Sargentii. This dwarf form of a wild tree 
of China and Japan appears to have been first collected by Professor 
Sargent near Mororan in southern Hokkaido in the autumn of 1892, 
and the plants raised from the seeds which he collected at that time 
are probably the only ones in cultivation. This Juniper forms a low 
dense mat of wide-spreading branches covered with small, dark green, 
scale-like leaves, mixed with pointed ones. It finds its most southern 
home on the high mountains of northern Hondo; it is more abundant 
in Hokkaido where it sometimes descends to the sea-level and ranges 
northward to Saghalin and the more southern Kurile Islands. In the 
Arboretum it is now the handsomest of the prostrate Junipers. It can 
be seen here to advantage on the Hemlock Hill Road opposite the 
Laurels where several plants form a large mass and show considerable 
seminal variation. There are also three large plants on the eastern 
slope of the knoll on which the general Juniper Collection is planted. 
Juniperus conferta, which has been called J. litoralis, is also a Japan- 
ese species ranging northward from the southern island of Tanegashima 
to Saghalin and to the shores of the Sea of Okhotsk. The sand dunes of 
Hakodate Bay in southern Hokkaido are covered wdth the long prostrate 
stems of this plant which root freely as they grow and extend over 
broad areas. The leaves are thickly crowded, straight, sharp-pointed, 
concave, pale above and dark below. The fruit is three-seeded and 
ripens at the end of the second year. Although this Juniper has been 
known to botanists for more than fifty years it has never been culti- 
vated until Wilson sent seeds from Japan to the Arboretum two years 
ago. From this seed a number of plants have been raised; they are 
doing well and there is reason to hope that this plant will soon be 
better known in eastern gardens. In northern Japan it grows on the 
sandy seashore with Rosa rugosa, which is such a good plant in the 
most exposed places on the New England coast, and it seems reason- 
