Naturalisation in Extra- Tropical Countries. 405 



Quercus incana, Roxburgh. 



Himalayas, at elevations between 3,000 and 8,000 feet, thence to 

 Upper Burmah. A beautiful gregarious evergeen tree of great 

 dimensions. Young branchlets in spring, as noted by Sir D. 

 Brandis, from whitish to lilac-colored. Mr. Simmonds reminds us, 

 that a silkworm (Anthereea Roylei), producing large cocoons, lives 

 on this oak. In its native localities Q. lanuginosa (D. Don) is 

 associated with it. 



Quercus infectoria, Olivier. 



Countries 011 the Mediterranean Sea, extending to Persia. A 

 tree, deciduous in its foliage. The galls of commerce are chiefly 

 obtained from this species, through" the puncture of a Cynips. A 

 variety or closely allied species, Q. Lusitanica (Webb) or Q. Mir- 

 beckii (Durieu) the Zeen-Oak, reaches a height of 120 feet, with 

 a stem-girth of 20 feet. Some forms of this are almost evergreen, 

 and then particularly eligible as promenade-trees. 



Quercus lamellosa, Smith.* 



From Nepal to Naga and Bootan, up to 10,000 feet. A magniti- 

 cent oak, reaching a tallness of 120 feet ; stem-girth to 30 feet. 

 Acorns with cups to nearly 3 inches in diameter. Wood used for 

 beams, posts, frames, rafters, not s abject to warping. The bark 

 serves well for tan. The tree enters prominently into forest-culture 

 at Darjeeling [Gamble]. 



Quercus lancifolia, Koxburgh (not Chamisso nor Bentham). 



A tall evergreen timber-tree of the Himalayas, extending to 

 Upper Burmah. Wood valued for its durability, pale, hard; its 

 medullary rays exceedingly fine [Sir D. Brandis J. 



Quercus lobata, Nee. 



Mexico and California. The Sacramento White Oak or " Roble." 

 A tree finally about 150 feet high, with a stem to 6 feet in diameter, 

 with wide-spreading branches, which often bend to the ground. 

 Hardy in Middle Europe [C. Koch]. The wood is brittle when 

 fresh, but hard and tough when seasoned ; its value has been much 

 underrated [Gibbons]. The acorns of this oak used to form a large 

 proportion of the winter-food of the aboriginal inhabitants of North- 

 California. 



Quercus lyrata, Walter. 



The Overcup-Oak of the South-Eastern States of North- America, 

 extending from South-Illinois to Florida and Louisiana. A tree of 

 majestic size, with a stem to 4 feet in diameter. Lately recom- 

 mended as valuable for timber-cultivation, especially in wet 

 ground. 



