GARDEN FLOWERS. 73 



crocus-like bulbous plants. Soil, sandy loam. Increased 

 by offsets. 



B. vernum (spring) ; hardy bulb ; 3 inches ; flowers purple, in 

 May ; Spain ; 1629. B. versicolor (various-colored) ; hardy 

 bulb ; 3 inches ; flowers lilac and yellow, in September ; Russia ; 

 1820. 



BUPLEARUM. Hare's Ear. [Umbelliferae.] A genus 

 consisting of about a dozen hardy annuals, as many hardy 

 perennials, and four greenhouse evergreens, growing in 

 sandy loam, and propagated by seeds, divisions, or cuttings. 

 They are not very ornamental or desirable. The general 

 color of the flowers is green and yellow. 



BUPTHALMUM. Ox-eye. [Composite.] Shrubby and 

 herbaceous plants, the former increasing by cuttings, the 

 latter by division or by seeds, and all growing in a soil of 

 equal parts sandy loam and leaf-mould. 



B. grandiflorum (large-flowered) ; hardy perennial ; 2 feet ; 

 flowers yellow, in August; Austria; 1722. B. maritimum 

 (sea) ; half-hardy perennial ; i foot ; flowers yellow, all sum- 

 mer ; Sicily; 1640. B. salicifolium (willow-leaved); hardy per- 

 ennial ; 18 inches; flowers yellow, in August; Austria; 1722. 

 B. speciosissimum (most showy) ; hardy perennial ; 2 feet ; flow- 

 ers yellow, in J-uly ; south of Europe ; 1826. 



Winter protection is necessary in the Northern States. 



BURNET. See SANGUISORBA. 



BURNING BUSH. See EUONYMUS. 



BUTCHER'S BROOM. See Ruscus. 



BUTOMUS. [Butomaceae.] Perennial aquatics, very orna- 

 mental on the margin of ponds or streams. Planted in 

 rich mud, they soon establish themselves and increase 

 rapidly. They require winter protection in the Northern 

 States. 



B. latifolius (broad-leaved) ; i foot ; flowers white, in July ; 



