By Thomas Bruges Flower, Esq. 341 



1. T. glabra, (Linn.) smooth Tower Mustard, Long-poclden Tower 

 Mustard, Tower's Treacle. Engl. Bot. t. 777. Reich. Icones, ii. 44. 



Locality. On banks by road sides, and newly cut copses, on a 

 dry sandy or gravelly soil Yery rare in the connty. A. 11. June, 

 July. Area, * * * 4. * 



North Division. 



4. North-icest District, " In a wood between the gate of Spye 

 Park and the House," Dr. Alexander Prior, N.B.G. In the lane 

 leading to the lodge from the Chippenham road. Sand}' Lane and 

 banks at Westbrook. This species appears at present confined in 

 the county to the above district, where it was first noticed by the 

 late Mr. Sole as far back as 1782. Ray likewise mentions having 

 found this plant in Wiltshire. 



Arabis, (Linn.) Rock Cress. 

 Linn. CI. xv. Ord. ii. 



Name. So called because originally an Arabian genus. 



1. A. hirsuta, (R. Br.) Hairy Rock Cress. Engl. Bot. t. 587. 

 Reich. Icones,/. 4342. 



Locality, On walls, rocks, and banks, not unfrequently distri- 

 buted in the county. B. Fl. May, June. Area, 1. 2. 3. 4. 5. 



South Division. 



1. South-east District, " On the walls of Old Sarum," Mr. James 

 Hussey, " Walls about Salisbury," Major Smith. " In the neigh- 

 bourhood of Bulford," Dr. Southby. 



2. South Middle District, " On banks near Westbury," Mrs. 

 Ocerbury. 



3. South-uest District, "Warminster and Heytesbury," Mr. 

 Rowden. 



» North Division. 



4. North-icest District, " Chippenham," Dr. Alexander Prior and 

 Mr. C. E. Broome. Conkwell, Box, Kingsdown, and Atworth 

 quarries. 



5. North-east District, "Silbury Hill," Mr. Coward. 



I have observed one or two forms of this plant. Koch and 

 Reiohenbach divide this into two or moro species. 



Y 



