Newcastle, Cleadon, Hartlepool, Boldon, Dunsdale, Port Clarence, &c.
20. ERYSIMUM, L.
1. E. cheiranthoides , L. Alien.
Very rare as a weed of cultivated fields.
2. E. alliaria , L. Native. British type. Area C, N, D. Range 1.
Common on hedge-banks, ascending in Teesdale to Newbiggin (300 yards).
21. CHEIRANTHUS, L.
1. C. Cheiri , L. Alien.
Often established on old ruins. Hulne Abbey, Warkworth Castle and Priory, Holy Island Priory, Brinckburn Priory, Norham Castle, walls at Durham, rocks at Southwick, Priors' Haven, &c. A native of the South-west of Europe.
22. HESPERIS, L.
1. H. matronalis , L. Alien.
An occasional straggler from garden cultivation. Hulne woods near the abbey (T.) Embleton (R. Embleton). Meadow at Chester-le-Street (G.T. Fox). Road-side on Cleadon Hill (W.H. Brown).
23. BRASSICA, L.
1. B. oleracea , L. Alien.
Plentiful down the face of the steep cliff on the sea-ward side of Tynemouth Priory.
2. B. rapa , L. Colonist. English type. Area C, N, D. Range 1.
Frequent by stream-sides and as a weed in cultivated fields. It is cultivated in Allendale up to 550 yards, and has been grown at Grasshill at 2000 feet.