18-55] Botany at Tunbridge Wells. 71 



randa of a drive, chiefly across the Downs, to the neigh- 

 bourhood of Sevenoaks, is from his Journal of Sept. 2Oth : 



" Sept. 20, 1855. Excursion to Morantscourt (called 

 Madanscut) Hill, near Sevenoaks, Kent. 



" On our way noticed Colias edusa (clouded yellow 

 butterfly) twice, once between Tunbridge and Riverhead, 

 and again beyond Sevenoaks. 



"We left Riverhill at about 11.30, and, following the 

 road, made a first halt at the bridge. Here in a hedge, 

 grew Mentha sylvestris (horse mint), and on the bridge 

 Asplenium ruta-muraria (wall- rue). Looking over the 

 parapet for aquatics, we discerned something very like 

 Anacharis (water- thy me), as indeed it proved on gathering, 

 and a sad plague it is become to the miller, having com- 

 pletely filled the still water that feeds the wheel. Here it 

 is quite as dense as in the Cam, and the miller assured us 

 he had only noticed it within the last five months : i.e. the 

 amazing growth must have mainly taken place this one 

 season. In the rapid, clear water of the brook below the 

 mill, the plant was also quite at home, though not in 

 nearly such abundance, but scattered about, growing 

 with Potamogeton crispus and Zannichellia (pond-weeds). 

 Fumaria capreolata (ramping fumitory), and a garden escape 

 were noticed close by ; Ballota (horehound) with white 

 flowers ; Glyceria plicata and G. aquatica (aquatic grasses) 

 above the mill. Proceeding along the road I found, on a 

 heap of rubbish, a good lot of Poa compressa (flat- 

 stemmed grass), as we neared the chalk, and I also found 

 it again in the cutting on the chalk itself. Is it cal- 

 careous, r 



" Soon Crepis biennis (rough hawks-beard), Picris, Gen- 

 tiana amarella (felwort), and Cichorium (succory) spoke of 

 the chalk ; and here may as well come in the whole list 

 that we saw more or less abundantly : Bromus erectus 

 (upright brome-grass), Asperula cynanchica (quinancy- 

 wort), Viola hirta (hairy violet) plenty, Pastinaca (wild 

 parsnep), Viburnum lantana (wayfaring tree), Chlora 

 (yellow- wort), Reseda lutea (wild mignonette), Rosa 

 tomentosa (woolly-leaved dog-rose), Helianthemum (rock- 

 rose), Clematis, Galeopsis ladanum (red hemp-nettle), 



