12 MASS. EXPERIMENT STATION BULLETIN 345 



BETULA PENDULA var. DALECARLICA CtFTLEAF WEEPING BlRCH 



With white bark, branchlets of weeping habit, and fine-cut leaves, this 

 variety has been a garden stand-by for many years. It, too, must now be 

 planted with its ultimate destruction by wood-boring insects in mind. 



BETULA PENDULA var. FASTIGIATA PYRAMIDAL WhITE BlRCH 



Combining white bark with a pleasing columnar form caused by the vertical 

 habit of its slightly sinuous stems, this deciduous tree of medium height should 

 be rated as one of the finest of upright woody plants. Unfortunately, its 

 trunk is a host to a boring insect which is killing off most of the larger European 

 Birches in New England. 



Betula populifolia Gray BlRCH 



This is the short-lived Birch which inhabits dry or sometimes very wet waste 

 land throughout southern New England. It is usually seen as a clump or a 

 multiple-stemmed tree which well deserves consideration as a real part of the 

 native landscape picture. Its leaves, like those of other White Birches, are in 

 many sections being disfigured annually by a leaf-mining insect. 



Bittersweet — See Celastrus 



Black Haw — See Viburnum prunifolium 



Bladdernut — See Staphylea 



Bluebeard — See Caryopteris 



Blueberry — See Vaccinium 



Boxwood — See Buxus 



Broom — See Cytisus and Genista 



Bruckenthalia spiculifolia SpiKEHEATH 



A heather-like, rock-garden plant with ten-inch stems and bell-shaped, pink 

 flowers in summer. 



Buckthorn — See Hippophae and Rhamnus 



BUDDLEIA ALTERNIFOLIA Hardy Buddleia 



An exceptionally hardy, tall, loose, deciduous shrub. Because of its habit 

 of bearing lilac-purple flower clusters in June on yard-long, pendulous sprays 

 of wood of the previous season, this plant at once becomes separated in culti- 

 vation from the other top-tender, semi-herbaceous species. It does well on 

 light, dry soils, and will withstand considerable shade, but will not flower 

 profusely in shady situations. Best if pruned just after flowering, as are 

 Spireas. 



Buddleia Davidi var. nanhoensis 



A somewhat dwarf and late-flowering variety for use where the species is 

 top-hardy and severe spring pruning is not practiced. 



BUDDLEIA DAVIDI var. VEITCHIANA Veitch B utter kly Bush 



A "die-back", deciduous shrub over most of New England. Its ability to 

 rise from the ground each spring to form a broad, symmetrical bush with 

 tapering clusters of mauve, yellow-eyed flowers terminating its branchlets 

 indicates its garden association as a background plant for the herbaceous bor- 

 der. Even where not killed back in winter, its garden value is enhanced by 

 pruning to the ground each spring. Its flowers appear in August when few 

 other woody plants are in bloom. 



