24 FLORA OF OXFORDSHIRE. 
TURRITIS. L. 
T. glabra, L. Tower Oress. 
Arabis perfoliata, Lamk. Syme, E. B. i. 169. 119. Bx. 430. Top. 
Bot. 43. Nym. 32. 
Native. Woods, hedge-banks. Local and rare. B. May-July. 
First record, Sib. 1794. 
4, Ray. Stow Wood, Sid. / Fields near Stow Wood, EF. Fox ! 
5. Isis. Ona wall at Witney, T. Forster, in Bot. Guide. 
7. Thames. Henley Park Hill, Prof. Daubeny, 1840. 
Berks. Nr. Maidenhead, Bx. 1841. Cookham Down, Phyt. i. v. 5. 
Bucks, Gloster, Warwick. 
ARABIS. L. 
* A. Turrita, LD. Tower Wall Cress. 
Comp. Cyb. 483. Syme, E. B. i. 169. 118. Baxt. 159, from an Oxford 
plant. Nym. 32. 
Alien. Old walls. Now extinct. May. 
First record, Sib. 1794, Mag. Coll. Walls. 
Mag. Coll. Rev. Mr. White, April, 1832, in Walk. Fl. It formerly 
grew within the old triangle, k. Walker. Naturalized on the walls of the 
Bot. Gardens near the old house, Bx. Now extirpated. It was destroyed 
in repairing Mag. Coll. walls, Journ. Bot. ix. 146. I have specimens from 
walls at Oxford gathered by Sir W. C. Trevelyan, Cyd. Br. i. 143. Mag. 
Coll. walls, 1855, H. Bos. 
The plant never deserved a place in our Flora except as a somewhat 
naturalized alien. 
A. hirsuta, L. Hairy Rock Cress. 
A. sagittata, DC. Top. Bot. 42. Syme, E. B.i. 168.116. Nym. 32. 
Native. Rupestral. Walls, dry fields, etc. B. June-August. 
First record, Blackstone, 1736. Barbarea muralis, J.B. 
4. Ray. Stow Wood, H. Bos.! Barton, H. Ridley. 
5. Isis. Ascot, field under the forest wall, near the Stile, Black MSS. 
Charlbury, R. Linton. Wootton, roadside, A. F. Rewley Abbey, 
Sib. Turritis hirsuta. 
6. Thame. Shotover! Bx. 1831. Holton Park wall, R. Walk. ! Thame, 
A. Fr. Wheatley. 
7. Thames. Goring, W. Pamplin! Stokenchurch, Hb. Ba. 
Berks. Sonning, railway cutting, F. Tufnail, Hoe Benham, Reeks. 
* A. albida, Stev. 
Alien. Garden escape. Bicester, A. Fr. Naturalized at Tetsworth 
with C. Chetri. Garden escape at Charlbury and Broughton. 
