PART TV: 
IDENTIFICATION OF EUCALYPTS. 
Most of the seedling Eucalypts planted in the Southwest were not 
labeled when set out, and the identity of the adult trees thus usually 
became a matter of uncertainty. The identification of a particular 
Eucalypt tree is often of great importance. It may be one that is 
thriving in the situation in which it is growing, but unless its name be ~ 
ascertained its value as a timber tree can not be known without p"tting 
the wood to an actual test, and thus destroying the tree. Orit may be 
known to be a desirable tree for some particular purpose or purposes, 
but the tree may not produce fertile seed from which it may be propa- 
gated. Moreover, a tree might thrive and produce fertile seed, but 
without a knowledge of its name the tree could not be written about 
or spoken of conveniently. Without knowing its name, seed or plants 
of the same species could not well be ordered by one desirous of obtain- 
ing them. It is also a matter of considerable interest to the possessor 
of Kucalypt trees to be able to establish for himself the identity of 
each of them. For the foregoing and for other reasons the identifi- 
cation of individual Eucalypts is a matter of great importance. The 
more thoroughly the tree is known from all standpoints, the more 
rapidly will information concerning it be disseminated. And the 
better the merits of the tree are understood, the more widely and 
extensively will it be planted. 
It being necessary that students of Kucalypts pursue a more system- 
atic method of identifving specimens of the genus than would be pos- 
sible through the use of the preceding pages, the following treatment 
of the genus from a botanical standpoint is appended. The descrip- 
tions of the family to which the genus Eucalyptus belongs, and also 
the description of the genus and species are modified from those given 
in the works of Baron von Mueller, Mr. George Bentham, and Mr. J. 
H. Maiden. Descriptions are included of only those species the indi- 
viduals of which reach at least 50 feet in height and 1 foot in diameter. 
Very brief descriptions are given of those species which have been 
discussed more fully in the preceding pages. Somewhat fuller descrip- 
tions are given of those not so fully treated previously. Brief state- 
ments are also made as to the utility of these latter species. What are 
supposed to be specimens of many of the 28 species described in the 
botanical part only of this publication are now growing in the South- 
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