118 THE BOTANICAL EXCHANGE CLUB OP THE BRITISH ISLES. 



Erophila verna E. Meyer, d. majuscula (Jord.). Wall top and 

 edge of footpath, the Marine Drive, The Great Orme, v.-c. 49, March 

 12, 1914.— C. Waterfall. 



Erophila stenocarpa J ord. Field at St Ippolyts, near 2nd mile- 

 stone for Hitchin, Herts, v.-c. 20, April 24, 1914. Cornfield, about 

 a mile away from Ref. No. 60 [Report 1913, p. 450), in similar stony 

 loam. As with Ref. No. 60, there was an admixture of plants with 

 less characteristic silicles. — J. E. Little. "Right, I think." — C. E. 

 Salmon. " One specimen is certainly right (rather small) ; the others 

 come between that and E. verna {vulgaris DC.)." — E. S. Marshall. 



Erophila stenocarpa Jord. Sandy cultivated ground, Mauldon, 

 Beds, v.-c. 30, April 25, 1914. The later stage of a plant similar to 

 the preceding, and, like it, mixed with less characteristic forms. — 

 J. E. Little. "Yes, T think so, but not an extreme example." 

 J. A. Wheldon. "Yes." — E. S. Marshall. 



Erophila verna E. Meyer, var. stenocarpa (Jord.). [Ref. No. 6.] 

 From another part of the wall on which No. 4 occurred, between Hook 

 Norton and Wigginton, Oxon, April 14, 1914, Some of this small 

 gathering seems to fit stenocarpa very well, but some of it looked as if 

 it had a touch of No. 4 in it. — H. J. Riddelsdell. " Four of my five 

 specimens are E. stenocarpa Jord. ; the other has shorter pods and 

 approaches E. vernal — E. S. Marshall. 



Erophila stenocarpa Jord.? [Ref. No. 53]. Field side near 

 Lunanhead, v.-c. 90, May 2, 1914. — R. & M. Corstorphine. " Silicles 

 5x2 mm. In E. stenocarpa they frequently attain 7 mm. in length, 

 while only 1| — 1| mm. broad. I would suggest that this is a form of 

 E. hrevipila Jord." — J. A. Wheldon. " I think so-; a weak small 

 podded state." — E. S. Marshall. 



Erophila ohovata Jord. % [Ref. No. 55]. Wall top near Clocks- 

 briggs, v.-c. 90, May 2, 1914. — R. & M. Corstorphine. "I do not 

 know that. Leaves remarkably glabrous at this stage." — E. S. 

 Marshall. 



Erophila prcecox DC. [Ref. No. 3]. Wigginton, Oxon, April 11, 

 1914. The wall tops of this neighbourhood ai'e covered with Erophila, 

 a fair proportion of which is E. prmcox. These elusive micro-species 

 are all the more difficult to determine, in a great number of individual 

 cases (some of the specimens now sent are only doubtfully /^mco^c), 

 because the colonies are by no means homogeneous ; and there is much 

 obvious transition between species, to say nothing of highly probable 

 crossing. Another difficulty arises from the fact that pods vary in 

 shape even on a single plant. The best and unmistakable prcecox runs 



