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Early-flowering: Cotoneasters. Two of the handsomest Cotoneasters, 
C. multiflora calocarpa and C. racemiflora soongorica, are in bloom 
on the southern slope of Bussey Hill. They are tall broad shrubs with 
white flowers in compact clusters standing up along the whole length 
of the long, slender, graceful, arching branches. Handsome as these 
plants are in May they are even handsomer in the autumn when their 
large and abundant red fruits are ripe. These two shrubs, which 
have now been well tested in the Arboretum, give every promise of 
becoming important garden plants in the northern states. 
Late-flowering Amelanchiers. The arborescent Shad Bushes, Ame- 
lanchier canadensis, A. laevis and A. oblongifoLia, dropped their petals 
nearly two weeks ago, but the flowers of some of the shrubby species 
are still in good condition and attractive subjects for the spring gar- 
den. Among the last of these to flower are the two Old World species, 
A. vulgaris of Europe and A. asiatica of eastern Asia. Some of the 
handsomest of the late-flowering American species are A. sanguinea, 
A. stolonifera, A. florida and A. pumila. The Amelanchier Collection 
is on the grass path on the left of the Meadow Road not far beyond 
the Administration Building. 
Malus Arnoldiana. In the last Bulletin attention was called to 
the hybrid Crabapple, Malus cerifkra. This plant is probably one of 
the parents of another hybrid which sprang up spontaneously in the 
Arboretum many years ago and has been called M. Arnoldiana. The 
other parent is probably M. floribunda, itself believed to be a hybrid 
which originated in China. If this view of the origin of M. Arnoldiana 
is correct, it is the offspring of two hybrids of different parentage and 
a good illustration of what can be obtained by crossing and recrossing 
the Crabapples. It is a low, broad, bushy tree with long arching up- 
per branches which are raised well above the general head of the plant 
and are wonderful objects when clothed from end to end with flowers 
and the blue sky is seen between them. The flower-buds, like those 
of M. floribunda are deep rose color and the petals after the flowers 
open gradually turn from rose color to white. The flowers, however, 
are as large as those of M. cerifera, or nearly twice as large as those 
of M. floribunda, and the fruit which is red is intermediate in size 
between those of the parents. The plant of the Arnold Crab in the 
Forest Hills Road Group and several plants in the Peter’s Hill Group 
have not before been more full of flowers or more beautiful. 
Early-flowering Buckeyes. The first of these plants to flower this 
year is the form of the Ohio Buckeye from northern Missouri with 
leaves of seven instead of five leaflets {Aesculus glabra Buckleyi). The 
flowers of this variety are brighter yellow and handsomer than those 
of the common form of this tree, and the plants in the Arboretum 
collection which are now covered with flowers are more beautiful than 
ever before. The flowers of the typical form with leaves of five 
leaflets open only a few days later than those of this north Missouri 
tree. The largest specimen of the Ohio Buckeye in the Arboretum 
is on the left-hand side of the South Street entrance. Another form 
of this tree, var. leucodermis, from southern Missouri and northern 
Arkansas has smoother bark and blooms later. In the Arboretum col- 
lection the flower-buds are not more than half grown. 
