CATALOGUE OF BRITISH PLANT-GALLS 193 



Colebp- Galls resembling those of the preceding. 



^^^^ Ceuthorrhynchus contractus Marsh 428 



Kirbyand Spence, 1828, p. 188. Houard, No. 2607. 



Homop- Floral axis thickened, flowers greenish. See No. 410. 

 **'^* Aphis brassicae Linn. 429 



Buckton, ii., 34. Houard, No. 2601. 



Nematoda Roots swollen. See No. 411. 



Heterodera Schachtii Schmidt 430 

 Connold, Plant Galls, p. 75. 



Capsella Bursa-pastoris Medic. 113. Shepherd's 

 Purse. 

 Homop- Leaf margin rolled upwards. See No. 410. 

 tera Aphis brassicae Linn. 431 



Buckton, ii., 34. Houard, No. 2739. 



Nematoda Stem swollen and distorted. 



Tylenchus devastatrix Kiihn 432 

 Bd. Agric. Leaflet, No. 46. 



Fungi Swollen white patches on stem, leaves, etc. See 



No. 394. 



Cystopus candidus L^v. 433 

 Massee, Textbook of Plant Diseases, p. 59. 



Lepidium campestre Br. 86. Common Pepperwort. 

 Coleop- Spherical tumours at base of stem. See No. 439. 



tera Ceuthorrhynchus pleurostigma Marsh 434 



Houard, No. 2492. 



Fungi White swollen patches on stem, leaves, etc. See 



No. 394- 



Cystopus candidus L^v. 435 

 Massee, Textbook of Plant Diseases, p. 59. 



Lepidium Draba Linn. Whitlow Pepperwort. 

 Coleop- Nodular swellings of very variable size on the roots and 



tera stem, containing several larval cavities. 



Ceuthorrhynchus pleurostigma Marsh 436 

 Houard, No. 2491. 



Thiaspi arvense Linn. 84. Penny-Cress. 

 ,, Elongated spindle-like swellings on the stem and 



branches, containing many cells with a single larva in 

 13 



