1850 The Trees of Great Britain and Ireland 



slightly scabrous above ; glandular and ultimately glabrescent beneath, except 

 for conspicuous axil-tufts ; lateral nerves few, 8 to 10 pairs ; petiole, ^ in. long. 

 ** Voung- branchlets densely pubescent. 



10. Ulmus campestris, Linnaeus. Southern England, Spain (.?). See p. 1903. 

 Leaves broadly oval or ovate, 2 to 3 in. long; scabrous and minutely 



pubescent above ; covered beneath with a dense soft pubescence : lateral 

 nerves, 10 to 12 pairs; petiole \ in. long, densely pubescent. Branchlets 

 without corky wings. 



11. Ulmus japonica, Ssxg^nt. Japan, Manchuria. Seep. 1923. 



Young branchlets light brown, often roughened with minute tubercles or 

 ridges. Leaves obovate or elliptic, 3 to 4 in. long ; scabrous above with 

 minute tubercles and short bristles ; densely pubescent beneath ; lateral nerves 

 12 to 16 pairs. Branchlets often with corky wings. 



III. Leaves, with eight to twelve pairs of lateral nerves ; often nearly equal at the 

 base ; often simply serrate ; axil-tufts inconspicuous or absent. 



* Leaves deciduous in autumn. 



(a) Branchlets with corky wings. 



12. Ulmus alata, Michaux. North America. See p. 1924. 



Leaves light green, thin in texture, oblong-lanceolate, about 2 in. long, acute 

 or acuminate at the apex, smooth above, with axil -tufts bepeath, biserrate ; 

 nerves rarely forked. 



13. Ulmus crassifolia, Nuttall. North America. See p. 1925. 



Leaves light green, coriaceous, oval, i to 2 in. long, acute or rounded at the 

 apex, often subcordate at the base, scabrous above, without axil-tufts beneath ; 

 often biserrate ; nerves usually forked ; stipules persistent till May. 



(b) Branchlets without corky wings. 



14. Ulmus pumila, Linnsus. Turkestan, Eastern Siberia, Manchuria, Korea, 



North China. See p. 1926. 

 Leaves thin and flexible in texture, ovate to ovate-lanceolate, i to 2 in. long, 

 acute or acuminate at the apex, scabrous or smooth above, with axil-tufts and 

 scattered minute pubescence beneath. 



** Leaves deciduous in January. 



15. Ulmus parvifolia, Jacquin. China, Tongking, Formosa, Japan. See p. 1928. 

 Leaves coriaceous, obovate or ovate-lanceolate, i to if in. long; shining, 



dark green, smooth and glabrous above ; glabrous beneath, but occasionally 

 with axil-tufts near the base. (A. H.) 



