THE GREEN-HOUSE CATALOGUE. 241 



NoTO^CERAS canariensis, an annual, introduced from the 

 Canaries in 1779, and flowering in August and September. 

 It grows in light soil, and is increased by cuttings. 



Cheira^nthus strictus, upright Wallflower, a spongy- 

 wooded undershrub, introduced from the Cape of Good 

 Hope in 1802, and flowering in July. 



C. onutahilis, changeable Wallflower, B. M. 195, also a 

 low shrub, with soft herbaceous-like branches, which was 

 introduced from Madeira in 1777, and flowers from March 

 to May. It is esteemed in collections for its early flowers, 

 and hardy nature as to soil. 



C. longifdliuSy long-leaved Wallflower, a low herba- 

 ceous-like shrub, introduced from Madeira in 1815, and 

 flowering from September to January. 



C. frufescens, entire-leaved Wallflower, a low shrub, in- 

 troduced from Teneriffe in 1815, and flowering in March, 

 and till June or July. 



C. scoparius, crowded-branched Wallflower, B. R. 219, 

 a low shrub, introduced from Teneriffe in 1815, and flower- 

 ing from March to August. 



C. linifdlius, flax-leaved Wallflower, a low green -house 

 shrub, introduced from Spain in 1815, and flowering from 

 March to August. 



C. semperfldrens, ever-blowung Wallflower, a low shrub, 

 introduced from Barbary in 1815, and flowering all the year. 

 It is a very desirable accession to a green-house, where 

 neither heaths nor camellias are introduced. 



C. silenifdlius, Catchfly-leaved Wallflower, a low green- 

 house shrub, by some considered only a variety of the last, 

 which flowers all the year. 



C. tenuifolius, fine-leaved Wallflower, a low shrub, intro- 

 duced from Madeira in 1777, and flowering in May and 

 June. 



All these plants grow readily in any light soil^^ and are as 



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