i22o The Trees of Great Britain and Ireland 



ending in a sinuate mucronate tooth ; ' lower surface green, with scattered 

 stellate pubescence. 



26. Quercus pontica, Koch. Western Caucasus and Lazistan. See p. 1321. 



Branchlets glabrous. Leaves elliptic, 6 in. long, 3 in. broad, with fifteen to 

 twenty pairs of nerves, each ending in an incurved mucronate serration ; lower 

 surface glaucous, pilose on the midrib and nerves, elsewhere glabrous. 

 26A. Quercus lusitanica, Lamarck. See No. 50. 



** Axillary buds surrounded by long filiform stipules. 



27. Quercus castanecefolia, Meyer. Algeria, Caucasus, north Persia. See p. 



1271. 

 Branchlets pubescent. Leaves oblong, 3 to 6 in. long, \\ to z\ in. wide, 

 with eight to fourteen pairs of nerves, each ending in a mucronate triangular 

 tooth ; lower surface pale green, covered with a minute tomentum. 



28. Quercus Lucombeana, Sweet. A hybrid. Seep. 1259. 



Branchlets tomentose. Leaves subevergreen, variable in size and shape, 

 2 to 5 in. long, with rather irregular mucronate lobes or teeth, densely white or 

 grey tomentose beneath. 



E. Leaves lobed or toothed, without projecting bristles or points. 



* Branchlets glabrous or glabrescent. 



(a) Leaves regularly toothed, or shortly lobed with shallow sinuses. 



t Leaves obovate. 



29. Quercus bicolor, Willdenow. North America. See p. 1307. 



Leaves white tomentose beneath and velvety to the touch, with six to eight 

 pairs of rounded, rarely acute teeth ; 5 to 6 in. long, 2 to 4 in. wide ; petiole 

 \ in. long. 



30. Quercus prinoides, Willdenow. United States. Seep. 131 1. 



Leaves white or pale beneath with a minute scattered pubescence ; with four 

 to seven pairs of rounded, rarely acute teeth ; 4 in. long, 2 in. wide ; petiole 

 \ to \ in. long. 



31. Quercus Mirbeckii, Durieu. Portugal, Algeria. See p. 1318. 



Leaves glaucous and glabrous beneath, except for brown flocculent 

 tomentum along the midrib; with nine to fourteen pairs' of rounded or acute 

 teeth ; 4 to 6 in. long, 3 in. wide ; petiole J to f in. long. 



32. Quercus Prinus, Linnaeus. North America. Seep. 1309. 



Leaves pale beneath with a minute pubescence disappearing in summer ; 

 with nine to fourteen pairs of rounded teeth ; 6 in. long, 3 in. wide ; petiole 

 ^ to 1 in. long. 



33. Quercus Michauxii, Nuttall. North America. Not now in cultivation. 



Leaves (see Plate 336, Fig. 34), lower surface green or whitish, covered 

 with conspicuous stellate tomentum ; with twelve to seventeen pairs of small 

 triangular teeth ; 6 in. long, 3 in. wide ; petiole J to 1^ in. long. 



34. Quercus grosseserrata, Blume. Japan. See p. 1327. 



1 In var. pscudoturneri the mucro is often obsolete. 



