32 
Rosa Ecae. This is another yellow-flowered Rose which is blooming- 
well this year in the Shrub Collection and is only a little later than R, 
Hugonis. It is a spiny shrub with small leaves and pale yellow flowers 
not much more than an inch and a quarter in diameter. It is a native 
of Afghanistan where it is common on dry mountain ridges, and of 
Samarkand. Much less beautiful than R. Hugonis, it is worth a place 
in a collection of Roses, for species with yellow flowers which are 
hardy in this climate are few in number. 
Syringa Koehneana. This Lilac, which flowered for the first time 
in the Arboretum two years ago, is bearing a much more abundant crop 
of flow’ers than it has produced here before. It is a native of northern 
Korea, and is a very large, vigorous and hardy shrub with slender 
branches which bend under the broad open clusters of small rose-col- 
ored or pink flowers with long, slender corolla-tubes and not much per- 
fume. The leaves are large, pointed and covered below with a coating 
of pale hairs. While it is not one of the handsomest Lilacs, it is an 
interesting addition to the number of species of this genus which can 
be successfully grown here. There are two large specimens, which have 
been in the Arboretum since 1902, on the bank next to the Forsythias 
at the lower end of the Lilac Collection. 
Aesculus Briotii. This is a form of the so-called red-flowered hybrid 
Horsechestnut {Aesculus carnea) and is now in bloom in the Aesculus 
Collection on the right-hand side of the Meadow Road beyond the Lin- 
den Group. It is the most brilliantly colored of all the forms of Aes- 
culus carnea and few trees hardy in this climate bear such showy 
flowers. This tree begins to bloom when not more than eight or ten 
feet high; it is perfectly hardy and should be seen more generally in 
American gardens. 
Aesculus georgiana. This shrub, which is a native of central Georgia, 
is flowering freely again this spring and is now covered with its com- 
pact clusters of yellow and rose-colored flowers. This interesting and 
handsome shrub is able, apparently, to support perfectly the New Eng- 
land climate, and it is one of the handsomest of American shrubs made 
known and introduced into cultivation by the Arboretum. 
Aesculus discolor. The scarlet-flowered variety (var. mollis) of this 
Buckeye is blooming again this spring in the Arboretum, and there 
now seems little doubt that this southern shrub, or small tree, can adapt 
itself to New England conditions. On the typical Aesculus discolor the 
flowers have a red calyx and yellow petals generally more or less flushed 
with rose. It is a much less common plant than the variety mollis on 
which both the calyx and the corolla are bright red. The variety is 
a common plant in Georgia and Alabama, and ranges west to south- 
eastern Missouri and to eastern Texas. Aesculus discolor and its vari- 
eties can be distinguished from other American Buckeyes by the soft 
covering of pale down on the lower surface of the leaflets, and from 
all species of the genus except Aesculus californica by the pale orange- 
brown color of the seeds. Aesculus discolor, var. mollis is an import- 
ant addition to the list of shrubs with brilliant flowers which can be 
successfully cultivated in northern gardens. 
