CATALOGUE OF BRITISH PLANT-GALLS 227 
Acari 
Horaop- 
tera 
Fungi 
9 ) 
99 
CONVOLVULACEAE 
Convolvulus arvensis Linn. 96. Small Bindweed. 
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 hyaline 
hairs on both surfaces. June and July. (Plate XXVIII.) 
Eriophyes convolvuli Nal. 688 
Swanton, Knowledge, June, 1910. Houard, No. 4714. 
BORAGINACEAE 
Lithospermum officinale Linn. 78. Common Grom- 
well. 
Terminal leaves more or less bent towards the stem, 
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. 
Stem much swollen ; aecidiospores pale yellowish. 
May to October. 
Aecidial stage of PUCCINIA MENTHAE Persoon 690 
Syn. Aecidium menthae D. C. 
Plowright, p. 157. 
Mentha longifolia Huds. {sylvestris 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. 
