REPORT FOR 1913. 



453 



Druce, in his List of British Plants, gives ten, most of these bearing 

 the same names as Mott's varieties. I am inclined to think that these 

 diverse views are possibly erroneous, and, that all the British forms 

 of Shepherd's Purse may be arranged under a small number of forms 

 of the grade of species. Under such an arrangement, Jordan's C. 

 agrestis must occupy a prominent place. An examination of type- 

 specimens of Mott's varieties (lent me by Mr Jackson) show that 

 densifolia, steiiocarpa lyrata, stenocarpa cor onopi folia, and the form 

 subsequently distinguished as var. cuneata, are all too closely allied to 

 each other, and to G. agrestis Jord. to admit of separation even as 

 sub- varieties. Mott's named examples show that coroiiopifolia differs 

 from densifolia only in the form of the radical leaves. The var. 

 coronopifolia often has long acuminate or cuspidate segments, and 

 densifolia has shorter bluntish segments. In spite of the figures of 

 Mott's paper, there are no differences in the shape of the capsules of these 

 forms, and some examples of Mott's own gathering of these vars. are quite 

 indistinguishable from each other, either by the form of leaves or 

 capsules. Var. cuneata is very well marked by its form of capsule, 

 and perhaps comes closest to Jordan's description of C. agrestis. — C. 

 E. Britton. " Yes, I believe it to be C. Bursa-pastoris, var. agrestis 

 Rouy and Foucaud." — G. C. Druce. 



Capsella gracilis Gren. Towing path by the Thames below Kingston, 

 Surrey, May 4, 1913. This name, given to forms of Capsella, showing 

 more or less incomplete development of the capsule, probably covers 

 plants of diverse origin ; some showing non-development owing to 

 climatic conditions, and others in which loss of fertility is due to 

 hybridity. T hesitate to so distinguish any example I send for 

 distribution, but I have reason to believe that C. gracilis often re- 

 presents C. agrestis x C. Bur set-pastor is, var. bifida. I have several 

 examples that I so name. — C. E. Britton. " Grenier's plant is said 

 to be a hybrid of C. rubella with Bursa-pccstoris, the abortive silicules 

 in these specimens point to hybridity, but have we C. rubella 1 " — 

 G. 0. Druce. 



Coronopus didymus Sm. Roadside, nr. Saltem Cove, Churston, 

 S. Devon, July 7, 1913. — C. Waterfall. 



Coronopus verrucarius (Gars.) Musch. and Thell. Crookland's 

 Brow, Dalton, v.-c. 69, Aug. 22, 1913. — D Lumb. " Yes, but it must 

 stand as C. procu,mbens, Gilib. The trivial verrucarius being taken 

 from Garsault's accidental binomial is invalid." — G. C. Druce. 



Lepidium laiifolum L. [Ref. No. 9795.] Banks of the Orwell, 

 Ipswich, Suffolk, very luxuriant ; specimens over 6 feet high occurring 

 there, July 1913.— G. C. Druce. 



