55 



Quercus infectoria, Oliv. 



Only a small tree, with deciduous foliage. Chiefly from this tree the 

 galls of commerce are obtained i 



Quercus lancifolia, Roxb. 



A tall timber tree of the Himalayas. Wood valued for its durability. 

 Quercus macrocarpa, Michx.* 



The Bur Oak of North America. Tree 70 feet high. The timber 



nearly as good as that of the White Oak. 



Quercus palustris, Du Koi. 



The Marsh Oak of North America. Height 80 feet ; of quick growth 

 The wood, though not fine-grained, is strong and tough. 



Quercus Priuus, L. 



The North American Swamp Oak. A tree, 90 feet high, available for 

 wet localities. Foliage deciduous. Wood strong and elastic, of fine 

 grain. A red dye is produced from the bark. 



Quercus Robur, L. * 



The British Oak, extending through a great part of Europe and 

 Western Asia, attaining a great age and an enormous size. Extreme 

 height 120 feet. Two varieties are distinguished : — 1. Quercus 

 sessiliflora, Salisbury. The Durmast Oak, with a darker, heavier timber, 

 more elastic, less fissile. This tree is also the quickest of the two in 

 growth, and lives on poorer soil. Its bark is also richer in medicinal, 

 dyeing and tanning principles. 2. Quercus pedunculata, VVilld. This 

 variety supplies most of the oak-timber in Britain for ship-building, 

 and is the best for bending under steam. It is also preferred for 

 joiner's work. 



Quercus rubra, L. 



The Red Oak of North America. Height 100 feet ; diameter of stem 

 4 feet. The wood is not of value ; but the bark is rich in tannin. 

 Autumnal tint of foliage beautifully red. 



Quercus semecarpifolia, Smith. 



In the Himalayas. Height of tree often 100 feet; girth of stem 

 18 feet. It furnishes a first-class timber; 



Quercus serrata, Thunberg. 



One of the 23 known Japan Oaks. It yields the best food for the 

 oak silkworm {Bombyx Yamamai.) 



Quercus Sideroxylon, Humboldt. 



Mountains of Mexico, at 8,000 feet elevation. An Oak of great size, 

 of compact timber, almost imperishable in water. Q. lanceolata, Q. 

 chrysophylla, Q. reticulata, Q. laurina, Q. obtusata, Q. glaucescens, 

 Q. Xalapensis (Kumb,) and Q. acutifolia (Nee), are among the many 

 other highly important timber Oaks of the cooler regions of Mexico. 



Quercus squamata, Roxburgh. 



One of the tallest of the Himalayan Oaks, Wood lasting, 



Quercus Suber, L * 



The Cork Oak of South Europe and North Africa; evergreen. It 

 attains an age of fully 200 years. After about 20 years it can be 

 stripped of its bark every 6 or 7 years ; but the best cork is obtained 

 from trees over 40 years old, Height of tree about 40 feet. Acorns 

 of a sweetish taste, 



