Complimentary 
NEW SERIES VOL. II 
NO. 15 
ARNOLD ARBORETUM 
HARVARD UNIVERSITY 
BULLETIN 
OF 
POPULAR INFORMATION 
JAMAICA PLAIN. MASS. OCTOBER 19. 1916 
Clematis dioscoreifolia. This Clematis, which first flowered in the 
Arboretum a year ago, can now be seen again in flov/er on the trellis on 
the eastern border of the Shrub Collection. In general appearance it 
resembles the Japanese and Chinese Clematis paniculata which is now 
one of the most popular climbing plants in the northern states. The 
leaves, however, are thicker and the flowers are larger with broader 
sepals, and are therefore even more showy than those of the Japanese 
plant. They are borne in long loose panicles and are exceedingly fra- 
grant. The fact that this new Clematis does not begin to flower until 
after the flowers of Clematis paniculata have fallen, and that it re- 
mains in flower until after the middle of October, should make it a 
valuable garden plant. It is a native of the Island of Quelpaert off 
the southern coast of Corea where it was discovered by the French 
missionary Tacket in 1908. The Arboretum plant was raised from seeds 
sent here in 1911 by Monsieur M. L. de Vilmorin. That this Clematis 
has grown here so rapidly and is so hardy in exposed positions shows 
that it is a plant with an unusually strong constitution for a Clematis, 
for very few species or varieties flourish in the Arboretum where the 
conditions for the successful cultivation of these plants are extremely 
unfavorable. 
Rhus javanica. This is the oldest and correct name of a small Chi- 
nese tree usually cultivated as Rhus Osbeckii or as R. semialata. This 
is not a rare tree in gardens, and attention is now called to it, for the 
autumn color of the leaves has been exceptionally beautiful this year 
in its deep tints of red and orange, and has made this little tree one 
of the beautiful objects in the Arboretum where it can be seen near 
57 
