EXOGENS. 



65 



looks very pretty peeping through the green moss, the bright 

 yellow contrasting well with the green ; a few pots of this 

 common plant are quite worthy of a place in the greenhouse, 

 and they serve to fill up vacant places remarkably well. 

 The Narcissus and Jonquil also may be treated in the same 

 way, and when their beauty is over, may be put into the 

 garden, where they will flower the following spring. Tulips 

 too should be introduced, for they will flower from Decem- 

 ber for some time; they must be grown in mould or moss, 

 and be well watered. If a few new bulbs of these four 

 genera are obtained every autumn, treated in this way in the 

 greenhouse for the first season, and then transferred to the 

 garden, the supply will be kept up, and a constant variety 

 obtained. 



Class III * EXOGENS. 



Increase of new wood taking place at the circumference, 

 always concentric. Leaves net-veined. Seed-lobes two or 

 more ; seeds enclosed in seed- vessels. 



* Seventh Class of Lindley. 



VOL. II. 



F 



