I50 



BRITISH GALLS 



Fungi 



Hjrmen- 

 optera 



Coleop- 

 tera 



Lepidop- 

 tera 



Diptera 



Hymen- 

 optera 



Circular or irregular large black patches, 4 to 5 mm, 

 thick, on the upper surface of the leaves, white inside. 

 Autumn and winter. 



Rhytisma salicinum Fries. 141a 



.Syn. Xyloma salicinum Persoon. 



Massee, Brit. Fung. Flora, iv., 71, 72. 



Salix aurita Linn. 106. Round-eared Sallow. 

 Leaf stalk swollen. See No. 109. 



Cryptocampus venustus Zadd. 142 

 Houard, No. 852. 



Pea-like excrescence on under surface of the leaf. See 

 No. 125. 



PONTANIA PEDUNCUH Hartig 143 



Connold, Plant Galls, p. 238. Cameron, ii., p. 198. 

 Houard, No. 863. 



Oval or elongated pustules on the upper surface of the 

 leaf. See No. 105. 



PONTANiA FEMORALis Cameron 144 

 Syn. Nematus femoralis Cameron, 

 Connold, Plant Galls, fig. 322. 



Bud greatly swollen, remaining closed, and ultimately 

 shrivelling up. Contains a solitary larva. M. E. Imago IL 



Cryptocampus saliceti Fall. 145 

 Connold, Plant Galls, p. 246. Houard, No. 836, 

 Rounded or fusiform swelling on the stem. See No. 1 1 5. 



Saperda POPULNEA Linn. 146 

 Houard, No. 850. 

 Fusiform swellings on the older branches. See No. 94. 



Grapholitha servilleana Dap. 147 

 Houard, No. 845. 



Terminal leaves forming a rosette. See No. loi. 



Rhabdophaga rosaria H. Low 148 

 Connold, Veg. Galls, pis. 85, 86 ; Plant Galls, fig. 321. 

 Houard, No. 827. 



Fusiform swellings on one-year twigs. See No. 95, 



Rhabdophaga salicis Sch. 149 



MacDougall, Joum. Bd. Agric, Oct., 1905. Houard, 

 No. 848. 



Salix cinerea Linn. 106. Grey Willow. 



Bean-like swelling on the leaf. See No. 90. 



Cameron observes that the galls on this species of 

 Willow are "oblong, dark green, like those on S.capraea^ 

 but are smaller and more hairy." 



Pontania proxima Lepel 150 



Syn. Nemaius gallicola Ste. 



Cameron, ii., p. 203. Houard, No. 903. 



