PRINCIPAL SPECIES OF EUCALYPTS GROWN IN AMERICA. 51 
The paragraphs giving the characteristics of the several species dis- 
cussed were all written or revised under typical trees of the respective 
species. It is hoped that they are sufficiently accurate and explicit to 
enable a planter, aided by the illustrations, to decide more or less 
. definitely whether a particular tree in question is what it has been 
represented to be, or is supposed to be. If there is no clue to the 
name of a tree, the name of which is desired, it will be necessary to 
resort to the use of the keys and descriptions given in the botanical 
section of this bulletin. For this work a good hand lens and some 
knowledge of botanical terms are essential. 
The climatic requirements of the Eucalypts described here have 
been determined mainly by personal observation and experiment in 
the Southwest. In some cases, where the species has been cultivated 
only to a limited extent in America, inferences in regard to the cli- 
matic requirements of the tree have been drawn from its native habitat. 
This is not entirely safe; but an attempt has been made to make state-_ 
ments based on such data very guardedly, as it can not always be 
prophesied from a knowledge of the native environment of any par- 
ticular species just how it will behave ina foreign country. The max- 
imum temperatures given as the degree of heat a species will endure 
are those recorded in the shade 5 feet from the ground by a self- 
recording thermometer. 
The information given concerning the uses of the several species 
is drawn largely from Baron von Mueller’s ‘* Kucalyptographia” 
and ‘* Select Extra-tropical Plants,” Mr. Maiden’s ‘‘ Useful Australian 
Plants” and ‘‘Commercial Timbers of New South Wales,” and Mr. 
Bailey’s **‘ Queensland Woods,” since most of the species have not been 
erown in America long enough nor planted extensively enough to 
furnish independent data concerning many of the uses of a large num- 
ber of the species. A notable exception to this is the Blue Gum 
(Lucalyptus globulus), which has already been used for a great variety 
of purposes, including wind-breaks, forest cover, shade, fencing, piling, 
fuel, and oil. A few others have been used for fuel and for timbers. 
The only useful purposes that many of them have yet served in America 
are as shade trees, wind-breaks, and bee pasture. 
Eucalyptus amyegdalina. 
GIANT EucALYPT; PEPPERMINT TREE. 
Characteristics.—In its native country the individuals of this species 
are the tallest of the genus, and probably the tallest trees in the 
world. In his ‘‘ Kucalyptographia,” Baron von Mueller says of this 
species: 
This Eucalyptus is one of the most remarkable and important of all the plants in 
