SELECT LIST OF GREENHOUSE PLANTS. 



231 



BLUE . 



From three to six feet high. 



Violet-coloured Prostanthera. {Pros- 

 tanthera violacea.) Flowers in May 

 and August, in sandy peat. Cut- 

 tings. 



Toothed Prostanthera. {Prostanthera 

 denticulata.) Flowers in June and 

 August, in sandy peat. Cuttings. 



Silvery Viper's Bugloss. (Echium 

 argenteum.) Flowers in July and 

 August, in peat and loam. Seeds. 



African Red Wood. {Ceanothus afri- 

 canus.) Flowers in March and April, 

 in peat and loam. Cuttings. 



