ORDERS, GENERA, AND SPECIES. 247 



SUB-DIVISION (6). 

 Flowers in catkins: 



Order 77. Cupuliferae. Stamens 5-20 ; perianth 5-6- 

 lobed ; fruit indehiscent, 1 -seeded, enclosed in a tough 

 involucre or cup ; trees with alternate, stipulate 

 leaves and small, green flowers. 



1080. Quercus Robur, 111 ; April 25 ; Sutherland south- 

 wards, Ireland, Channel Islands. p. 30 



1081. Fagus sylvatica, 67 ; April 24 ; on chalk and lime 

 chiefly, England ; Scotland and Ireland planted. p. 29 



1082. Carpinus Betulus, 37 ; May 22 ; N. Wales, Staf- 

 ford and Norfolk to Devon and Kent, Scotland and Ireland 

 planted, Channel Islands. p. 52 



1083. Castanea vulgaris, ; May 29 ; S. and S. W. 

 England mostly. p. 52 



1084. Corylus avdlana, 117 ; March 4 ; Great Britain, 

 Ireland, Channel Islands. p. 17 



Order 78. Betulaceae. Stamens 1 or more, opposite each 

 sepal ; fruit small, indehiscent, 2-seeded, not enclosed 

 in a cup ; trees or shrubs with alternate leaves and 

 small flowers. 



1085. Alnus glutinosa, 116 ; March 26 ; Caithness 

 southwards, Ireland, Channel Islands. p. 23 



1086. Betula alba, 115 ; April 16 ; Great Britain, Ire- 

 land, Channel Islands. p. 29 



1087. Betula nana, 16 ; May 17 ; local, Sutherland to 

 Perth, Peebles, Northumberland: p. 53 



Order 79. Salicaceae. Stamens 1 or more to each scale ; 

 perianth ; fruit many-seeded, not in a cup ; trees 

 with alternate, simple leaves, and flowers which mostly 

 precede the leaves. 



1088. Populus alba, 60 ; April 7 ; Elgin southwards, 

 Ireland, Channel Islands. p. 30 



1089. Populus canescens t 48 ; April 9 ; S. E. England? 

 especially Norfolk. p. 30 



