373 
Sisymbrium Columnce Jacq. Waste ground by Bush House, 
Strand, London, Middlesex, Aug. 3, 1926. [Kef. 1206]. Growing 
in great abundance and associated with Epilobium angustifoliuM, 
Polygonum Persicaria , Erysimum cheirantlioicles and Senecio viscosus. 
— E. C. Wallace. Should name this S. pannonicum Jacq. — C. E. 
Salmon. The upper leaves of S. Columnar are entire. In Mr. 
Wallace’s plant they are cut into linear segments characteristic 
of S. pannonicum Jacq., to which I should refer it. Coste 
describes the siliquas of the latter (under Sisymbrium Sinapistrum 
Crantz) as glabrous; and at maturity they are so; but when 
immature they are hispid. Both these aliens are becoming more 
frequent. — J. E. Little. Others agree to this being pannonicum. 
S. Columnce Jacq. Kiddy Lane, Hitchin, Herts., Sept. 6 and 
Oct. 23, 1926. — J. E. Little. (Question has been raised by Mr. 
W. H. Pearsall, as to the identification of S. Columnce Jacq. 
and S. orientate L. The sheets sent may afford opportunity 
for the discussion of this point. — J.E.L.) 
S. Columnce Jacq. Abbey Wood, W. Kent., v.c. 16, 1926. 
— St. John Marriott. 
Capsella Bursa-pastoris Medik., sub.-sp. Brittonii E. At. [Kef. 
x. 78]. Field near Addington, Surrey, Sept. 18, 1926. — J. E. 
Lousley. No ; that form has larger silicules with more convex 
margins, a deeper sinus, and subacute lobes. Mr. Lousley’s plant 
has affinities with C. gallica and C. germanica, but does not exactly 
match any specimens named for me by Prof. Almquist. — C. E. 
Britton. E. At. = Ernst Almquist. — ILS.T. 
C. B.-p. Medik. sub.-sp. Druceana E. At. ? [Ref x. 2]. Wall- 
top, South Croydon, Surrey, March 24, 1926. — J. E. Lousley. 
Is Capsella B-p. (L.) batavorum E. At. Dwarf specimens, but 
otherwise typical. — C. E. Britton. 
C. B.-p. Medik. s. — sp. anglica E. At. ? [Kef. x 5]. Rubbish 
heap at top of Banstead Down, Surrey, v.c. 17. All specimens 
from same large plant. — J. E. Lousley. Material insufficient for 
accurate determination. — C. E. Britton.* 
Coronopus didymus Sm. Rubbish heaps, Hampton Court, 
Middlesex, Sept. 11, 1926. I have found it in flower and fruit 
at this locality during almost every month of the year. — J. E. 
Lousley. 
Viola silvestris Lamarck, var. punctata Druce ? Wray, near 
Keigate, Surrey, May 2 and April 2, 1926. [Ref. x. 36], Veins 
* Mr. Britton wishes it to be known that the determinations of Capsella 
and Cenlaurea apply only to the sheets he has seen. 
