88 THE PLANT WORLD 



Pandanus forms. Among the latter are worthy of note 

 a P. hiimilis with a top spreading twenty feet or more, and a 

 P. ordoratissimiis with an even larger top, and with numerous 

 banyan-like roots, two inches in diameter, coming from the 

 lower branches and from the base of the trunk. A Yucca 

 Anstralis, eighteen, inches at base and twelve feet high 

 suggested the southwestern American deserts. 



Inside the glass houses were a large collection of 

 exotics in good growing condition. Especially interesting 

 were a number of cactoid forms of Etiphorhia, some of them 

 ten feet or more in height. Many trees in the houses showed 

 that they had been growing there for many years. Several 

 species of Citrus were represented by potted specimens 

 several inches in diameter. Other large trees were rooted 

 in the ground, among these being several Ficus trees, a 

 Dammara robiista, six inches in diameter and a Podocarpus 

 macrophylliis, ten inches through the base. Most interesting 

 perhaps, was a monstrous branched specimen of Cycas revo- 

 b'.ta, the stem of which had as much the appearance of certain 

 monstrous specimens of the giant cactus which I have seen 

 in southern Arizona. The Cycas in question possessed, 

 besides its terminal bud, which was the largest and apparently 

 the most healthy, no less than eigth lateral buds or growing 

 points. The trunk rose normally about one foot from the 

 soil and then spread out suddenly in a fan-shaped mass of 

 short and crowded branches. All of these branches had 



apparently borne leaves at some time, but only one of them 

 had foilage w^hen seen by me. All lay in the same general 

 plane, there being three on one side of the main axis and 

 fiye on the other. — Burton E. Livinston. 

 Munich, Germany, March i8, 1908. 



"A. G. T." in Nature gives an interesting review of a 

 late work by Dr. Carl Holtermann entitled Der Einfliiss des 

 Klimas aiif den Ban der Pflanzengewebe, which is a report on 



