6o CRUCIFEKAE 



1. Isis. Thames bank near Oxford, Bosicell. Lechlade. Cumnor. 



Xew Bridge. Evnshani Road. Appleton, &c, 



2. Oct. River-bank between Kennington and Nuneham. Xear 



Sutton Courtney. Didcot. Ifflev. Cothill. Sandford Lasher. 

 Abingdon. Grarford. Hanney. &c. 



3. Pang. River-side between Moulsford and Reading. 



4. Kennet. 'SoTth.'H.eAth.RussdI'sCat Near Aldermaston. Tbeale, &c. 



5. Loddon. By Thames near Bisham Wood, Britf. Contr. Walthani. 



Coleman's Moor. Maidenhead. Twyford. Old Windsor. 

 B. sinapioides occui-s in all the bordering counties, and is un- 

 doubtedly a native in Berkshire. 



B. Sinapistnuu, Boiss. Toy. Esp. ii. 39 ^1839). Charlock, Wild Muatard. 

 B. arrensis, leges not of the Linnean Afantissa where the plant is 

 Moricandia arreyis-is'^. Sinapia arvensis. Linn. Sp. PL 668. Rapistrum 

 aruorum, Gerard, 179. 



Top. Bot. 48. Syme, E. B. i. 124. t. 83. Xyman, 47. El. Oxf. 32. 

 Xative. Agrestal. Cornfields. Very common, especially in the north 



of the countv. A. Ma v- August. 

 First record. Sinapis arvensis. Charlock. A xerj troublesome weed 

 in cornfields, but being an annual may easily be extirpated, 

 Mavo/s Agr. Berks, 1809. At Marlow sparingly, being replaced by 

 [B.'] alba, which abounds everywhere, IVIr. G. G. Mill in Phiit. i. 

 984. 1843. 

 Yar. 3LEI0CAKPA is the more frequent plant ; it has glabrous siliquas. 

 Var. ORTEyiATTS; Asch. El. Brandb. 48, with siliquas covered with 

 bristly hairs, has been noticed at Uffington, South Hinksey, Maiden- 

 head, and elsewhere. 



The Charlock occurs in all the bordering counties. 



•o 



B. alba, Boiss. Toy. Esp. ii. 39 (1839). White Mustard, Charlock. 



Sinapis alba, Linn. Sp. PI. 668. Sinapi album, Ger. Em. 244. 



Top. Bot. 48. Syme, E. B. i. 125. t. 84. ^yman, 47. El. Oxf. 32. 

 Colonist. Agrestal. Cultivated fields. Very abundant on the chalk, 

 where it replaces B. Sinapistnim, and is called Charlock. A. May- 

 September. 

 First record. Sinapis alba, Dr. Xoehden, in Mavor's Agr. Berks, 1809. 

 Included in Russell's Cat 1839. Abounds everywhere about 

 Marlow, Mr. G. G. MiU in Phyt. i. 984, 1843. Kintbury iMr. W. 

 Heicett, Jun.~\, in Herb. Brit. iEus. 1841. 

 B. alba occurs in all the districts, but in the greater part of the 

 Isis and in the northern and central portion of the Ock districts it 

 only occurs in a sporadic manner. In the chalky soils of the Pang, 

 the Kennet, and the Loddon districts, it is a very conspicuous feature 

 in the cornfields, where it forms a more agreeable sight to the 



