GARDEN FLOWERS. 97 



Levant; 1816. C. Orieiitalis (^2JS,X.^xTi); hardy annual ; 2 feet; 

 flowers brown and yellow, in July ; Levant ; 1713. 



Celtis. Nettle-Tree. [Ulmaceae.] Hardy ornamental 

 trees. Propagated by seed sown as soon as ripe, and by 

 cuttings of the young shoots. Common soil. 



C. crassifolia (thick-leaved) ; 20 feet ; flowers green, in May ; 

 North America; 1812. C. lavigata (pohshed) ; 20 feet ; flowers 

 green, in May ; Louisiana. C. Occidentalis (Western) ; 20 feet ; 

 flowers green, in May; North America; 1656. C. Occidetttalis 

 cordata (heart-leaved) ; 20 feet ; flowers green, in May ; North 

 America. C. Occidentalis scabriiiscida (rough ish) ; 20 feet ; flow- 

 ers green, in May ; North America. C. ptwiila (dwarf) ; 6 feet ; 

 flowers green, in May ; North America ; 1812. 



Cenia. [Compositse.] A family of small hardy annuals, 

 propagated by seed, and thriving in any good garden soil. 



C. tiirbinata (turbinate) ; hardy annual ;. i foot ; flowers white, 

 in August; Cape of Good Hope; 17 13. C. tiirbinata fonnosa 

 (beautiful) ; hardy annual ; i foot ; flowers yellow, in August ; 

 Cape of Good Hope. 



Centaurea. [Compositae.] A large family of mostly 

 hardy perennials, comprising, however, some very ornamen- 

 tal annuals, which should have a place in every garden. 

 These may either be sown in the open border about the end 

 of April, and the plants thinned out subsequently to three 

 or four in a patch, to be left for blooming, or they may be 

 sown with other annuals in a seed-bed, or in pots, for 

 facility of transplantation ; in the latter case being sown 

 somewhat earlier, and coming earlier into flower. They 

 bloom from June, more or less onwards to September. The 

 very numerous hardy perennial kinds — any of which are 

 worth growing as common border flowers — grow w^ell in 

 the common soil of gardens, and are increased by division. 



C. crocodylium (crocodylium) ; hardy annual ; 3 feet ; flowers 

 7 



