ALNUS. QCERCTJS. 389 



very narrow membranous margin. E. B. 2326. A small pro- 

 cumbent shrub. L. minute. Catkins subsessile, small. Turfy 

 places in the Highlands. Sh. V. Dwarf Birch. S. 



5. AL'NUS Mill. Alder. 



1. A. glutinosa (Graert.) ; 1. roundish blunt wavy serrate 

 glutinous rather abrupt with a wedgeshaped base, axils of the 

 veins beneath downy. E. B. 1503. R. xii. 641. St. 29. 15. 

 A moderately large tree. Trunk and branches crooked. 

 Male catkins long and pendent ; fern ones short, ovoid or oblong, 

 very persistent. /3. incisa ; leaves deeply cut. Wet places an 1 

 river-banks. . Wigtonshire. Dr. Balfour. T. III. E. S. I. 



Tribe IV. Cupuliferce. 



6* PA'GUS Linn. Beech. 



1. F. sylcat'ica (L.) ; 1. ovate glabrous obscurely dentate ciliate 

 on the edges. E. B. 1846. R. xii. 689. A large tree with 

 triquetrous fruit. Woods, particularly on calcareous soils. T. 

 III. IV. E. 



7. CASTA'KEA Mill. Chestnut. 



\_C. saliva (Mill.) ; 1. oblong-lanceolate acuminate mucronate- 

 serrate glabrous on each side. Fagus Sin. E. B. 886. R. xii. 

 640. C. vulgar-is (Lam.) ed. viii. Height 50 80 feet. A 

 magnificent tree. A very doubtful native. T. V. Sweet 

 Chestnut.^ E. 



8. QUEK'CUS Linn. Oak. 



1. Q. Robur (L.) ; 1. deciduous stalked obovate-oblong sinuate, 

 lobes blunt, inv. much shorter than the ripe acorn its scales ad- 

 pressed. a. Q. pedunculata (Ehrh.) ; young branches glabrous, 

 petioles short, fr. -catkins long-stalked, fr. scattered. E. B. 1342. 

 /3. Q. intermedia (I). Don) ; young branches glabrous, petioles 

 short, 1. stellate -downy beneath, fr .-catkins shortly stalked, fr. 

 near together. Mart. Rust. 11. y. Q. sessiliflora (Salisb.) ; 

 young branches downy, petioles long, 1. glabrous beneath, fr.- 

 catkins subsessile, f r. near together. E. B. 1845. It is generally 

 supposed by fjresters that there are two if not three species of 

 Oak in Britain. I have failed in learning how to distinguish 

 them. Woods. T. IV. V. E. S. I. 



