292 Forestry Quarterly. 



commonly persistent. Inner bark yellow. Branches usually 

 smooth. 



Growth : Trees usually of medium height. Said to attain 

 250 feet, and diameter of 6 to 8 feet. Trunks commonly 

 crooked and gnarled. 



Wood : Timber very hard, tough, and durable ; not easy to 

 split. Wood of yellowish color. Durability — Durable both 

 above and under ground. Uses — Used for spokes, naves, cogs, 

 and heavy frame work. Used for telegraph poles, posts, etc. 

 An excellent fuel. A good source of honey. 



Requirements: Climate — Wide range of climate. Will 

 grow near coast on plains and foothills, and in warm, dry in- 

 terior valleys. Soil — Prefers a fairly fertile soil in order to do 

 well. 



Places Grown in the West: Santa Monica. 



23. E. microtheca. 



COOLIBAH. 



Identification : Leaves — Foliage dense and inclined to 

 droop. Leaves long and somewhat curved, dull green. Flowers 

 and Fruit — Flowers very small, 3 to 8 in cluster, which usually 

 grow in groups. Seed cases very small, broadly top-shaped, 

 valves protruding. Bark — Of trunk rough, generally furrowed, 

 commonly persistent, brownish gray color. 



Growth : Tree of medium size, generally crooked, attains 

 heights of 50 to 80 feet and diameter of 2 to 4 feet. The few 

 growing in America have erect trunks and promise to become 

 fairly large. 



Wood: Dark red or brown, excessively hard and inter- 

 locked. Uses — Promises well for a forest cover. Furnishes ex- 

 cellent all around timber. Useful for bridges, ties, posts, build- 

 ings, and for cabinet work. 



Requirements: Climate — Indigenous to dry, hot deserts. 

 Will stand 127 F. in shade, and even 156 F. Endures heavy 

 frosts. This tree promising under desert conditions. Soil — 

 Does best in gravelly, well drained soil. 



Peaces Grown in the West: Has grown well wherever 

 tried in California. 



Facts oe Special Interest: Roots at times a source of 

 water in dry interior of Australia. 



