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leaves of the Bristol plant are very variable, as was shewn 
in this large series which a member suggested my gathering. — 
H. S. T. 
Erysimum cheiranthoides L. Portishead, N. Somerset, 
July 25, 1932. In potato patch, with Galium Vaillantii, etc. 
— H. S. Thompson. 
Brassica adpressa Boiss. Waste ground near Railway 
Station, Ncwhaven, Sussex. — Coll. A. 0. Hume, July 9 and 
August 26, 1907. Comm. S. Loud. Bot. Inst. Yes, B. adpressa 
Boiss. ( incana (L.) F. Schultz.). — E. Drabble. 
Diplotaxis muralis DC. b. Babingtonii (Syme). [922]. 
Hitchin, Herts., October 29, 1932. — J. E. Little. This is 
D. muralis DC. var. intermedia (Schur. pro sp.) which com- 
prises the taller, stouter and more leafy of the plants usually 
called var. Babingtonii. I have had similar plants from 
Oxfordshire and Derbyshire. — E. Drabble. 
Diplotaxis muralis was noted as rare in Webb and Coleman’s 
Flora Hertfordiensis (1859), but during the last century it has 
much extended its range in North Herts., travelling along the 
railways, and is now frequently to be found on ballast, in 
waste places and on arable fields. 
The over-winter plant, which received the name var. 
Babingtonii (Syme), is now not infrequent. Ascherson and 
Graebner remark that this form changes habit considerably, 
loses the basal rosette, and becomes much-branched and 
luxuriant. It thus simulates the habit of D. tenuifolia, and 
the length of the pedicel of a ripe siliqua is sometimes as much 
as 18 mm. to a pod of 32 -mm., or 16 : 28, not at all corres- 
ponding to book descriptions. 
The flowers of D. tenuifolia, become much smaller at the 
end of the season, not greatly different in size from those of 
D. muralis. 
A useful contrasting character is given by Asch. and Graebn. 
viz., D. tenuifolia : siliqua shortly stiped above the scar of 
the calyx. D. muralis : siliqua without stipe. — J. E. L. 
D. tenuifolia DC. Aldeburgh, September, 1928. — Leg. 
K. D. Little. Pod with stipe and style up to 34 mm. (or 32 mm. 
or 20 mm.). Pedicel up to 22 mm. Stipe 1-0 mm. Flowers 
relatively small, 6-0 mm. long. (Hooker gives, pods A- 1 in.) 
— J. E. Little. 
