66 GARDEN FLOWERS. 



5 feet; flowers yellow, in March; north of India; 1850. B. 

 repens (creeping) ; evergreen shrub ; 2 feet ; flowers yellow, 

 in May ; North America ; 1822. B. trifoliata (trifoliate) ; half- 

 hardy deciduous shrub ; 5 feet ; flowers yellow, in June ; Mex- 

 ico ; 1839. B- trifurca (three-forked) ; half-hardy evergreen 

 shrub; 5 feet; flowers unknown; China; 1852. B. vulgaris 

 (common) ; hardy deciduous shrub ; 8 feet ; flowers yellow, in 

 May ; England. B. Wallichiana (Wallich's) ; evergreen shrub ; 

 10 feet ; flowers yellow ; East Indies ; 1820. 



Most of the evergreen species require a winter protection 

 of evergreen boughs in the Northern States. 



BERGIA. [Elatinaceae.] Hardy annual, of no great 

 beauty. Sandy soil. Propagated by seeds. 



B. "verticillata (whorled) ; hardy annual ; i foot ; flowers white 

 and red, in June ; Egypt ; 1820. 



BERTEROA. [Cruciferse.] A small family of herbaceous 

 half-hardy plants, allied to Arabis, grown in common garden 

 soil, and increased by division, seed, and cuttings. The 

 species all have whitish flowers and are B. incana, muta- 

 bilis, and obliqua. The former is also known as Alyssum 

 incanum. 



BETCKIA. [Valerianaceae.] A genus of hardy annuals, 

 allied to Valerian. Propagated by seeds sown in a hot-bed, 

 and transplanted to the border. 



B. magis (larger) ; hardy annual; 1 8 inches ; flowers rose, in 

 August; California;. 1836. B. samolifolia (samolus-Ieaved) ; 

 hardy annual ; i foot ; flowers rose, in July ; Chili ; 1835. 



BETONICA. Betony. [Labiatas.] Hardy perennials. 

 Soil, common garden mould. Propagated by division. 



B. grandiflora (great-flowered) ; hardy perennial ; 2 feet : 

 flowers purple, in July; Siberia; 1800. B. incana (hoary); 

 hardy perennial ; 6 inches ; flowers flesh-color, in June ; Italy ; 

 1759. B. nivea (snowy) ; hardy perennial ; i foot ; flowers red, 



