36 FLORA OF OXFORDSHIRE. 
T. perfoliatum, L. Perfoliate Shepherd’s Purse. 
Top. Bot. 31. extinct. E. B. 2354, from an Oxon sp. Baxt. 240. Nym. 62. 
Native. Glareal, rupestral. Dry stony pastures. Very local. A. March, 
April. 
First record, T. arvense perfoliat. minus C. B., and first as British, 
J. Bobart, in Ray’s Stirp. 1688. 
5. Isis. Among the stone pits between Witney and Burford, J. Bobart, 
Ray's Stirp. 1690; Ray’s Syn., Ed. i. ii. and iii.; Huds. Fl. Ang. ; 
and on Burford Downs, Sibth., do. Sm. Eng. Fl. I believe it has 
not been found in any other part of Britain, do. in Sm. Fl. Br., Bot. 
Guide, Hooker 1818, New Bot. Guide, Baxt. Br. Pl., Walker, Purton, 
ete. It grows a little beyond the fourth milestone on the right 
hand from Witney to Burford with the green winged Bee orchis. The 
end of April and beginning of May, note in Dill. Ray. in Bib. Hort. 
Ox. about 1760, Dr. Lightfoot, a spec. from this locality in Hd. Br. 
Mus. Col. T. Bicheno. Iam given to understand that the rapacity 
of unprincipled collectors has nearly or quite destroyed it in its old 
habitat on Burford Downs, Phyt., vol. i., p. 129, 1842. Wat. Top. 
Bot. 23, extinct (?) Woodstock, in a cornfield on left hand side of 
road to Sturdy’s Castle, 1859, Hb. Ph. Soc., T. Thurland. Betn. 
Woodstock and Kirtlington, 1859, H. Bos. in Journ. Bot., p. 17, 
1871. These records refer to the same locality, see paper in Linn. 
Journ., vol. xvi., p. 183, G. S. Boulger. Stonesfield and Fawler in 
great abundance, 1882, 1883, and 1884, see papers of Record Club 
for 1884. In Syme’s E. B. it is stated to occur on Burford Downs; 
but this locality is now enclosed, and I have failed to find it near 
Witney or Woodstock. Sheep and slugs are very fond of it; they 
do not appear to touch Hrophila verna, with which it grows. Near 
Lyneham barrow and Sarsden quarries very fine spec. 1885. A few 
plants from time to time have been found on Cumnor Hill, Berks: 
these owe their origin to a quantity of seed scattered there by 
Messrs. Boswell and Holliday about 1860. 
This plant only occurs in Britain in the counties of Oxford and 
Gloucester. 
[T. alpestre, Z. Oxon. Top. Bot. 23, bracketed. Cyb. Br. i. 119. 7. per- 
Jfoliatum, L. has sometimes been called alpinum. There is not the 
slightest probability that T. alpestre has ever been found in Oxfordshire. 
The confusion in the Dillenian Ray caused by referring to perfoliatum 
forms of alpestre, Nicolson and Merrett, probably led to our Oxford plant 
being sometimes mislabelled—as in Hb. Br. Mus.—alpestre.] 
TEESDALIA, Br. 
T. Iberis, DC. Shepherd’s Cress. 
T. nudicaulis, Br. Top. Bot. 31. Syme, E. B. i, 209. 150. Nym. 63. 
Native. Glareal. Heaths. Veryrare. A. May, June. 
