48 
Rosa mundi, or more properly Rosa gallica var. versicolor, is the 
semidouble Rose with petals irregularly striped with white and dark 
rose color which is occasionally found in old New England gardens 
where it is generally called the York and Lancaster Rose, as it is also 
usually called in England. It is a handsome and interesting plant which 
should find a place in collections of old-fashioned Roses, but it is not the 
real York and Lancaster Rose which is a variety of Rosa damascena 
(var. versicolor). The petals of this Rose are in the same flower entirely 
white, entirely red and sometimes half red or rose color and half white. 
Flowers with petals of the two colors are well shown in the pictures 
of this Rose published early in the last century. The York and Lan- 
caster Rose appears to have become extremely rare in gardens even in 
English gardens, but it has flowered abundantly this year in the Arbor- 
etum. The confusion in regard to these two Roses is likely to be in- 
creased by the fact that although one of them is a variety of R. dam- 
asceyia and the other of R. gallica they both have the same varietal 
name versicolor. 
The Apothecary Rose is one of the names which was formerly 
given to a form of Rosa gallica, variously known as var. officinalis and 
var. provincialis.^ It is a dwarf plant growing from twelve to eighteen 
inches tall and spreading freely by underground shoots, and as it is able 
to maintain itself in sod it is gradually spreading from gardens and 
becoming naturalized. The foliage is dark green and the large, partly 
double, red flowers are extremely fragrant. This Rose occurs in a few 
of the old gardens of Massachusetts and New Hampshire, but is little 
known to rosarians of the present century. How long it has been in 
this country no one knows, although tradition makes the Huguenots 
responsible for its introduction. Formerly this Rose and other forms 
of Rosa gallica were cultivated in Europe on a large scale commer- 
cially to supply the petals which are slightly tonic and astringent, but 
were employed in medicine chiefly on account of their color and as a 
vehicle for the exhibition of more active medicines. 
The last Viburnum of the season, V. Canhyi, is now in flower. It 
is the largest and handsomest of the blue-fruited species of eastern 
North America, with larger leaves and flower-clusters and larger fruit 
than those of the related species. In the Arboretum Viburnum Canhyi 
has grown into densely branched round-topped bushes from ten to twelve 
feet high and broad, and is one of the handsomest of the summer-flow- 
ering shrubs in the collection. Large specimens can be seen in front 
of the Administrstion Building and at different points along the drives. 
The first Hypericum, H. Buckleyi, has already opened its flowers in 
the Shrub Collection. It is a rare plant found only on a few of the 
high mountains of North Carolina, but is perfectly at home in the 
Arboretum where it has been growing for many years. It forms a 
dense mat of slender branches less than a foot high, covered with small 
leaves and, usually early in July, with small bright yellow flowers. 
This Hypericum is an excellent plant for the rock garden and for a 
ground cover or the borders of shrubberies. 
