CATALOGUE OF BRITISH PLANT-GALLS 227 



CONVOLVTTLAOEAE 



Convolvulus arvensis Linn. 96. Small Bindweed. 



Acari Midrib of the leaf, the petiole, and sometimes the lateral 



veins, swollen, forming a pouch opening on the superior 



surface. The hypertrophied part is wrinkled, pinkish-red, 



and completely covered with a velvety pile of short hyahne 



hairs on both surfaces. June and July. (Plate XXVIII.) 



Eriophyes convolvuli Nal. 



Swanton, Knowledge, June, 1910. Houard, No. 4714. 



688 



BORAaiNAOEAE 



Lithospermum officinale Linn. 78. Common Crom- 

 well. 

 Homop- Terminal leaves more or less bent towards the stem, 

 tera forming a distorted mass. Aphis reddish-brown, with a 

 large black dorsal spot. Larvae green, with similar dark 

 spot. 



Aphis cardui Linn. 689 

 Houard, No. 4742. 



LABIATAE 



Mentha rotundifolia Huds. 54. Round-leaved Mint. 

 Fungi Stem much swollen ; aecidiospores pale yellowish. 



May to October. 



Aecidial stage of Puccinia menthae Persoon 690 

 Syn. Aecidium menthae D. C. 

 Plowright, p. 1 57. 



Menthalongifolia Huds. (jry/vM/m Linn.). 64. Horse- 

 mint. 

 „ Stem swollen. See No. 690. 



Puccinia menthae Persoon 691 

 Plowright, p. 157. 



Mentha spicata Linn, (viridis Linn.). Spear Mint. 

 „ Stem swollen. See No. 690. 



Puccinia menthae Persoon 692 

 Plowright, p. 157. 



Mentha aquatica Linn. 112. Water Mint. 

 „ Stem swollen. See No. 690. 



Puccinia menthae Persoon 693 

 Plowright, p. 157. 



