THE GREEN-HOUSE CATALOGUE. 239 



green frame perennial, introduced from Caucasus in 1802, 

 and flowering in June and July. 



These are ornamental little plants, and valuable as ever- 

 greens : they thrive in any light soil or brick rubbish, and 

 are readily increased by cuttings in the same soil, and under 

 a hand-glass. 



Cra^mbe fniticosa, Madeira Colewort, a low spongy 

 undershrub, introduced from Madeira in 1777, and flower- 

 ing from May to November. 



C. strigosa, Canary Colewort, a low spongy undershrub, 

 introduced from the Canaries in 1779, and flowering in May 

 and June. 



These are plants of no beauty.. They grow in sandy soil, 

 and may be raised from seeds or by cuttings under a glass in 

 the same soil. 



BiscuTE^LLA sempervvrens, downy-leaved Buckler Mus 

 tard, a low frame shrub, introduced from Spain in 1784, of 

 no beauty whatever, but easily increased by seeds or cuttings 

 in any sandy soil ; it flowers in May and June. 



Yk'lla Pseudo-Cy^tisus, shrubby Cress Rocket, a low 

 spongy frame shrub, introduced from Spain in 1759, and 

 flowering in April and May. It grows in any dry rubbish, 

 or limy soil, and is readily increased by cuttings or seeds. 



LEpf DiuM divaricdtum, close-spiked Pepperwort, a low 

 shrub, introduced from the Cape of Good Hope in 1774> 

 and flowering from May to August. 



L. Cardamines, Spanish Cress, a frame biennial, intro- 

 duced from Spain in 1789, and flowering in June and July. 



L. siibulcdum, awl-leaved Spanish Cress, a spongy under- 

 shrub, introduced from Spain in 1739, and flowering in July 

 and August. 



These are plants of no beauty whatever ; they grow in 

 any light soil, and are increased by cuttings in the same soil 

 or by seeds. 



