j EUCAL YPTUS. 



EUCALPTUS ROBUSTA. 



Previously allusion has been made to the fact that Euca- 

 lyptus robusta,. as we have it, varies in the cap part of the 

 calyx from the typical tree of this name, in that the cap 

 is the same size, or a little narrower, than the calyx tube 

 while, in Von Mueller's plate the cap lid, or operculum, is 

 much broader. 



Eucalyptus robusta is one of several trees known in 

 Australia as mahogany, a vernacular name which excites 

 the opposition of Von Mueller. 



The reddish coloring of the wood has doubtless dubbed 

 these trees mahogany. There is however nothing else to 

 warrant the name. Several other species of Eucalyptus 

 containing considerable kino are also called mahogany. 



Eucalyptus Kirtoniana, a variety of robusta, perhaps 

 the one we have, is according to experiments in India 

 (Oude) reported by Von Mueller well suited to tropical 

 conditions. Under these conditions this tree has grown 45 

 feet in ten years (Xucknow). Eucalyptus robusta is reported 

 as specially tolerant of wet, sour or alkali lands. An experi- 

 ment of Mr. Ryan and myself at the Ballona will soon 

 test their value in this regard with us. 



The indications of the experiment are that Eucalyptus 

 rostrata is a better tree for alkali. Eucalyptus robusta has 

 now a great popularity as a road tree. Its head is 

 compact and symmetrical, its leaves dark green, its flow- 

 ers profuse and creamy white. The bark *is rough and 

 persistent. The oldest Eucalyptus robusta on a street 

 that I know are on Downey avenue, East Los Angeles, 

 near Mr. Hancock Johnson's place. Fine specimens may 

 be seen at Santa Monica, one of them is at the Forestry 



