174 FLORA OF OXFORDSHIRE. 
4. Ray. Headington Wick! Hb. Rev. R. Linton. Meadows by the 
Cherwell, H. Bos. 
5. Isis. South Leigh, Coombe, Sib. Yarnton Meadows, H. Bos. North 
Leigh. 
6. Thame. Cowley Common, Sid. Bullingdon Bog! H. Bos. 
Berks. Bagley Wood, boggy place sloping north; in meadow near 
Botley Pound, 1831, Bx. Frilford and Tubney, meadow below 
Kennington, Wytham. 
Bucks. Northants, rare. Gloster E.,near Kelmsford. Warwick. 
The first year’s plant has the leaves subentire, the perennial frequently 
has leaves pinnatifed lobed, and this form has been occasionally recorded as 
the hybrid C. Forsteri, Sm. I am inclined to think the plant in Flora of 
Hampshire belongs here rather than to the hybrid. The description in 
E. B. of Forsteri is rendered vague by the word ‘former’ instead of 
‘latter,’ being used to refer to the decurrent leaves of palustris. I have 
had the annual plant sent to me as C. heterophyllus. 
C. palustre, Scop. Marsh Thistle. 
Top. Bot. 243. Syme, E. B. v. 12. 688. Nym. 4og. 
Native. Pratal. Meadows, woods, hedgebanks, etc. Common and 
generally distributed. P. July—Sept. 
First record, Sib. 1794. Carduus pulustris, L. With white flowers on 
Shotover Hill between the two Windmills, Br. MSS. Also at North 
Leigh, Binfield, Horsepath, etc. The form with densely aggregated 
anthodes is the common plant, but specimens with anthodes subsolitary 
have been noticed. A plant with subsolitary anthodes on longer pedicels 
and with the stem less decurrently winged occurred at Headington, and 
probably had some arvense parentage. 
C. arvense, Scop. Common Thistle. 
Top. Bot. 243. Syme, E. B. v. 17.693. Nym. 41o. 
Native. Agrestal. Cornfields, roadsides, ete. Abundant and ubi- 
quitous. P. July, Aug. 
Sometimes nearly covered with Uredo suaveolens. 
First record, Sib. 1794. Carduus arvensis, L. 
CARDUUS. L. 
Cc, nutans, L. Musk Thistle. 
Top. Bot. 241. Syme, E. B. v. 7.683. Nym. 411. Bx. 174. 
Native. Waysides, waste ground, chalk downs, etc. Not uncommon. 
B. May-Sept. 
First record, Sid. 1794. 
1. Stour. Tadmarton Heath. 
2. Ouse. Mixbury, Hardwick, etc. 
8. Swere. Bloxham Road, Gull. Bretch! Milton, Wykham, Crouch 
Lane, A. Fr. 
