3 1 8 Select Plants for Industrial Culture 



Quercus Skinneri, Bentham.* 



Mexico. On limestone-soil, in the temperate region at 7,000-8,000 

 feet elevation. " Cozahual." Acquiring a height of 150 feet; thick- 

 ness of stem to 12 feet. Wood yellowish, remarkably durable and 

 elastic, not excelled in value by that of any other oak. Bark rich in 

 tannin (Hugo Finck). Foliage deciduous. The acorns of this oak 

 measure nearly 6 inches in circumference, and are available for feeding 

 various domestic animals. 



Quercus stellata, Wangenheim. (Q. obtusiloba, Michaux.) 



The Post-Oak of North-Eastern America. Content with poor and 

 even sandy soil, but not a large tree. Can be reared on sea-shores. 

 On account of its very durable and dense wood it is much in requisi- 

 tion there for posts, and is particularly prized for ship-building, also 

 sought for railroad-ties. 



Quercus Suber, Lmn.* 



The Cork-Oak of South-Europe and North- Africa. It is ever- 

 green and attains an age of fully two hundred years. Hardy in the 

 lowlands of England. After about twenty years it can be stripped 

 of its bark every six or seren years; but the best cork is obtained 

 from trees over forty years old. Height of the tree finally about 40 

 feet. Acorns of sweetish taste. Mr. W. Robinson found that young 

 cork-oaks, obtained from the writer, made a growth of 4 feet yearly 

 in the humid Western Port-district of Victoria. The bark of Q. 

 pseudo-suber (Santi) is inferior for cork, but the closely-allied Q. 

 occidentalis (Gay), which is hardier than Q. Suber, produces an 

 excellent cork-bark. 



Quercus Sundaica, Blume. 



One of the oaks from the mountains of Java, where several other 

 valuable timber-oaks exist. The existence of oaks on the north- 

 western mountains of New Guinea has been demonstrated by Dr. 

 Beccari; hence, in all probability, additional valuable evergreen 

 species will be obtainable thence for our arboreta and forests. 



Quercus Tozae, Bosc. 



South-Europe. One of the handsomest oaks, and one of the 

 quickest in growth. Will live in sandy soil and emits suckers. It 

 furnishes superior tanners' bark. 



Quercus virens, Linn.* 



The Live-Oak of North- America, extending northward only to 

 Virginia, occurring also in Mexico. One of the hardiest of the 

 evergreen species. Likes a coast-climate and a soil rich in mould. 

 Becomes 60 feet high, with a stem sometimes to 9 feet in diameter. 

 Supplies a most valuable timber for ship-building; it is heavy, com- 

 pact, fine-grained; it is moreover the strongest and most durable 

 yielded by any American oaks. Like Q. stellata, it lives also on sea- 



