DIERVILLAS 249 
DIERVILLAS 
Natural Order CapriroLiace®. Genus Diervilla 
DIERVILLA (named by Tournefort in honour of M. Dierville, a 
French surgeon and traveller, who sent home the first species, 1739). 
A genus of hardy ornamental shrubs with opposite leaves, and funnel- 
shaped or bell-shaped tubular flowers in showy clusters. Stamens five ; 
style slender. The species are natives of North America and Asia. 
Some are better known in gardens under the synonym of Weigela. 
DIERVILLA GRANDIFLORA (large-flowered). Stems 
branched, 8 feet high. Leaves oval-lance-shaped, toothed, 
strongly veined beneath. Flowers pink; May and June. Native of 
Japan. Several varieties are known in gardens, 
D. ROSEA (rosy). Similar to the last, but of smaller stature (6 feet) 
and foliage. The leaves lack the prominence of the net-veining beneath, 
and the rosy or white flowers are produced in greater abundance. 
Introduced from China (1844). There are several varieties of this 
species also. 
Principal Species, 
Diervillas succeed out of doors in ordinary garden soil, 
provided they have a fair amount of moisture, and the 
aspect is not very sunny. They may be propagated by separating the 
suckers, or by means of cuttings taken in autumn or spring. 
Cultivation. 
GUELDER ROSE AND LAURESTINE 
Natural Order CapriFoLiAcEz. GENUS Viburnum 
VIBURNUM (the classical Latin name). A genus with about eighty 
species of trees and shrubs, having leaves toothed, usually opposite, 
occasionally in threes; and white or pinkish flowers. The structure of 
the flowers is similar to that of Diervilla, but the inflorescence is a large 
corymb or panicle, the outer flowers often large and sterile. They are 
natives of the temperate and warm regions of the Northern Hemisphere, 
extending south to the Andes, and occurring rarely in the West Indies 
and Madagascar. Two species are natives of Britain—V. Opulus and 
V. Lantana, ; 
II.—22 
