54 EUCALYPTS CULTIVATED ITT THE UNITED STATES. 



horizontalh^ placed, dark green and g-lossy above, and feather- veined, 

 their appearance giving- the tree its specific name calophyUa, the Greek 

 for "beautiful leaves." The flowers are unusually large for the genus, 

 commonly cream-colored, in large clusters. The urn-shaped seed cases 

 are the largest of an^- ILucalypt, being rivaled only by those of ?J. fici- 

 folia^ to which it is closely related, the most conspicuous difference 

 being in the bright red flowers of the latter. As the seed cases per- 

 sist for some time, they are a conspicuous feature of the tree. The 

 seeds are large and the seed leaves of the young plants consequently 

 unusualh" prominent. The young seedlings are hairy for some time, 

 the leaves diflering in a striking manner from the glossy ones of the 

 adult tree. (See PI. LIT.) 



Climatic requirements. — Eucalyptus calophyUa thrives best in a 

 moist, tropical climate, enduring neither a hot, dry atmosphere, nor 

 low temperatures. In America it has succeeded only in the warm 

 coast regions, failing entirel}^ in the dry interior plains and valleys. 

 In no locality has the rate of its growth been such as to give promise 

 of much usefulness as a forest tree. 



Uses. — The species furnishes a valuable timber, said to be used in 

 Australia much as hickory is in the United States, but the wood is 

 reported as not durable underground. It jdelds a large amount of kino, 

 and in Australia the bark is used in tanning. On account of its pro- 

 fuse bloom the tree is an important source of nectar for bees. In Cal- 

 ifornia the large seed cases have been polished and used for pipe bowls. 



Eucalyptus citriodora. 



LeM OX-SCENTED GuM. 



Characteristics. — ^This is a handsome, fast-growing tree, soon becom- 

 ing tall and slender. In favorable situations in the Southwest it attains 

 a height of 60 to 100 feet in ten to fifteen years. The trunk is straight 

 and even, the foliage being confined mostl}- to the loft}- summit. (PI. 

 XIV.) Consequently it is necessary to cut it back severely if its 

 leaves and flowers are to be accessible. The bark is light-colored, 

 faintly mottled b}' indentations that indicate where thin patches have 

 flaked off'. This mottling of the trunk, together with the stately 

 character of the tree, the graceful foliage, the profuse bloom, and the 

 fragrant leaves, make this Eucalvpt one of the most attractive of the 

 genus. (PI. XV.) 



The stems and leafstalks of the young seedlings are rough, with short, 

 brownish hairs, and their leaves oval or lance-shaped, with the leafstalk 

 attached above the roundish base. (See PI. LXXXI, u.) The leaves 

 of the tree are long, quite narrow, and equally shin}" green on the two 

 sides. The foliage possesses a pleasant odor closel v resembling that of a 

 lemon, giving the tree its varietal name citriodora, the Latin for '' citrus- 



