A GARDEN FLORA 
21 
B. virescens. Sikkim Himalaya. 
B. vulgaris. Common Barberry. Europe, Britain, N. 
Africa and Temperate Asia. 
B. vulgaris, var. globularis. 
„ var. ilicifolia. 
„ var. lycioides. 
B. wallichiana. Himalaya and China. 
„ var. latifolia. 
Syn. B. Knightii. 
BERCHEMIA. Rhamnaceae. 
B. racemosa. Japan. 
BESCHORNERIA. Amaryllidacese. 
*B. superba. 
*B. yuccoides. Mexico. 
Is grown with the succulents described on page 10. 
The plant flowers annually, and the spikes, with 
their red bracts, are magnificent. 
BETULA. Birch. Betulaceae. 
B. alnoides, var. pyrifolia. W. China. 
Height 15 feet. Planted in the Lower Arboretum 
about 1910. 
B. japonica, var. mandschurica. W. China. 
B. nigra. River Birch. N. America. 
B. papyrifera. Paper Birch. N. America. 
Height 14 feet. Planted in the Lower Arboretum 
1910. 
B. utilis. Himalayan Birch. Himalaya. 
Syn. B. Bhojpattra. 
Height 9 feet. Planted in the Lower Arboretum 
1911. 
B. verrucosa. Silver Birch. Europe, Britain, N. Asia. 
Syn. B. alba. 
BIGELOWIA. Rayless Golden Rod. Compositae. 
B. Douglasii. W. North America. 
„ var. tortifolia. 
