TOPOGRAPHICAL BOTANY OF SCOTLAND 181 



Quercus Robur, Z., aggr. in all ; pedunculata, Ehrh., 90, 93, 94, 

 96-98, 100, 102, 106; sessiliflora (Satisb.), 80, 82, 83, 90, 

 102, 107, 109!. 



Castanea sativa, Mill., 75, 83, 85, 93, 99, 101. 



Fagus sylvatica, Z., 99, 105!, 1087, 109!, uof. 



SALICACE^E. 



These were inadvertently omitted from my former list ; hence 

 the distribution of each is here given in full, as far as earlier records 

 known to me appear to require to be noticed. The numerous 

 records of varieties have been largely omitted, chiefly because the 

 difficulty of determining such in a genus like Salix makes the value 

 of these records very doubtful in many cases, and also because many 

 of the supposed varieties are now regarded as hybrids. The sub- 

 joined list of hybrids rests on the testimony of experts in the study 

 of the genus. 



Salix triandra, Z., 72, 80, 81, 83, 88, 89?!, 90, 91. 



S. pentandra, Z., 72-77, 79-94, 95 ? t> 9 6 ? t, 9 8 - I 2, 105?, 107, 



108, 1 10 ?f. 

 S. fragilis, Z., 72, 73, 75-102, 105, io6f, nof, inf. In almost 



all localities in Scotland this occurs under the form britannica, 



F. B. }}~hite, though seldom recorded as such. It is certainly 



an introduced plant in many of the northern counties, and may 



be so in all parts of Scotland. 

 S. alba, Z., 72-81, 83-105, 107, 109-111. Probably introduced in 



all parts of Scotland, certainly so in the northern counties. 



var. vitellina, Z., 72, 77, So, 88, 90. 

 S. cinerea, Z., in all. 

 S. aurita, Z., in all. 

 S. Caprea, Z., 72-109, in. 

 S. repens, Z., 72-77, 79-81, 83-98, 100-112. 

 S. phylicifolia, Z., 72, 75 (" Gl. Cat."), 77, 79-81, 83, 84, 86-92, 



95-9 8 , 99 (" G1 - Cat"), 104, 105?, 106, 109, in. 

 S. nigricans, Stn., 72, 74, 78, 80, Si, 83, 86-90, 92, 95, 98, 99 



("Gl. Cat."), 102, 104, 105?, in?. 

 S. Arbuscula, Z., 88, 89, 90?, 92, 98. 

 S. viminalis, Z., 72-77, 79-81,83-96, 98, 100-102, 104!, 105, 1077, 



1 08, iiof. Very frequently planted for basket - making; 



certainly introduced in many counties in the north, but it is 



scarcely possible to determine its claim to be indigenous. 

 S. lanata, Z., 88, 90, 92. 



S. Lapponum, Z., 83, 86-90, 92, 94, 96-98, 105, 106, 108, 1 1 1 ?. 

 S. Myrsinites, Z., 72, 88, 90, 92, 96-98, 106?, 107, 108, in. 

 S. herbacea, Z., 72, 73, 75, 86-90, 92, 94, 96-100, 102-112. 

 S. reticulata, Z., 87, 88, 90, 92, 97, 105?, 108, in. 



