32 FLORA OF OXFORDSHIRE. 
Sinapis arvensis, L. Charlock, Garlic. 
Brassica Sinapis, V. Top. Bot. 48. Syme, E. B. i. 124. 83. Nym. 47. 
Native. Agrestal. Very common in cornfields from the north, southwards 
to Mongewell, when Sinapis alba takes its place as a cornfield weed, on 
the Chalk. A. May-Sept. 
First record, Sibth. 1794. 
S. alba, L. White Mustard, Charlock. 
Brassica alba, Bois. Top. Bot. 48. Syme, E. B. i. 125.84. Nym. 47. 
Colonist. Agrestal. Cultivated fields. Locally common. A. May- 
August. 
First record, Sibth. 1794. Cornfields. No locality. 
1. Stour. Stourwell, 7. Bees. 
. Ray. Kirtlington, EZ. Fox. 
. Isis. Near Chadlington. 
. Thame. Cowley fields, Thame, Bx. MSS. 
. Thames, Abundant throughout the Chalk district, taking the place 
and name of Charlock, the Sinapis arvensis of northern and central 
Oxfordshire. 
Berks. Equally common on the Chalk in this county. 
NSO oe 
DIPLOTAXIS. DC. 
[D. tenuifolia, DC. 
Berks. On the walls of Reading Abbey and Windsor Castle ; Northants 
(Northampton Castle now demolished), Gloster ; Warwick.] 
D. muralis. DC. Wall Rocket. 
Brassica muralis, Bois. Syme, E. B.i. 140. 94. Nym. 49. 
Denizen. Viatical. Glareal. Waste ground, Railway cuttings. A. or 
B. July—Sept. 
First record, Baxter, circa 1840. 
8. Swere. Little Bourton and Cropredy, A. Fr. Somerton, Mathews. 
4, Ray. Heyford Upper and Lower, by canal side and on railway 
banks, Rep. of Rec. Club, 1883. 
5. Isis. Port Meadow, I’. Bennett. Osney, Oxford, Hb. Ba. Old 
walls, Oxford, Hb. Lawson, 1869. 
6. Thame. Dorchester, #. Fox. Littlemore, railside. 
7. Thames. Goring, Ff. A. Lees. Chinnor, North Stoke. 
Var. Babingtonti, Syme. Waste ground near Gt. Western Railway 
Station, Oxford. Sometimes recorded as D. tenuifolia. Under Railway 
bridge, North Stoke. 
Berks. Radley, F. Bennett. Tilehurst to Sonning, on Railway, F. 
Tufnail, Moulsford ; Bucks ; Northants ; Gloster ; Warwick. 
** Lunaria biennis, Mch. Honesty. Nym. 50. Casual. Plantation 
