30 FLORA OF OXFORDSHIRE. 
Sisymbrium thalianum, Gay. 
Arabis Thaliana, L. Top. Bot. 40. Syme, E. B.i.163.115. Nym. 45. 
Native. Rupestral and agrestal. Sandy fields and walls. Local. A. 
April-May. 
First record, Morison, 1680. 
1. Stour. Tadmarton heath. 
4, Ray. In agrtis circa Oxoniam, Morison, ii. 235, 1680. Stow Wood, 
Sib.!| Upper Heyford, Rev. EH. Fox. In abundance in a field to 
the N.E. of Elsfield, 1830. Noke, Wood Eaton. 
5. Isis. Brassica spuria caule magis foliosa hirsutior. On walls about 
Oxford, Blackstone, p. 8. South Leigh, Sib. Stonesfield, Binsey. 
6. Thame. Iffley, Sib./ Thame, A. Fr. Wheatley, G. Haseley. 
7. Thames. Caversham, Newd. Checkendon, Nuffield, 696 feet. 
Berks. 8S. Hinksey, Twyford. 
* §. Irio, L. London Rocket. 
Cyb. Br. i. 151. Oxford. Nym. 43. Syme, E. B.i. 145.98. Bx. 146. 
from an Oxford plant. Comp. Cyb. ‘It did grow about Oxford 20 years 
ago, if not now.’ 
Denizen. Viatical. Rare. A. June. 
First record, note in Dill. Ray, probably Dr. Lightfoot, circa 1760. 
4, Ray. Under Merton Wall, near Physic Garden, as above; do. Sib., 
Rose Lane, Sib.; do. Baw. 1811 in Walk.; do. in Purton, naturalized 
near the Danby gate of the Physic Garden, 1835, Bx. Br. Pl. See 
also for note on its occurrence after rubbish had been burnt, to 
prepare ground for the Salicetum. Newly made ground near 
Botanic Garden. Hb. Br. Mus. Col. W. T. Dyer. See report of 
Bot. Ex. Club, 1867. Oxford by the Cherwell. Self sown in Bot. 
Gard. Journ. Bot. ix. W.T. Dyer. Cherwell bank, H. Bos. Church 
Lane, on rubbish heap. 
S. officinale, Scop. Common Hedge Mustard. 
Top. Bot. 45. Syme, E. B. i. 143. 96. Nym. 44. 
Native. Viatical and agrestal. Road sides, waste places. P. May- 
August. 
First record, Sidth.1794. Erysimum officinale, L. Common throughout 
the county. 
BRASSICA. L. 
B. Rapa, L. Wild Turnip. 
Var. rapifera, K. Syme, E. B. i. 140. 90. Nym. 46. 
Colonist. Agrestal. Borders of fields and waste places. April—Sept. 
First record, Sibth. 1794. No locality. ‘Radice caulescente orbiculari 
depressa, carnosa.’ 
3. Swere. Railside, Adderbury, 4. Fr. Drayton, R. Fr. 
