THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
5 10 
Caltha radicans , Forster in ‘Linn. Soc. Trans.,’ viii. (1S07), 324, 
t. 17. In marshy places by the River Dee, between Braemar and 
Invercaukl Bridge, S. Aberdeenshire, 28th June 1896. — G. Clartdge 
Druce. “I should hardly have thought this so; the leaves are quite 
unlike the cultivated specimens (from Kew) I had in my garden for 
many years.” — A. Bennett. 
Fumaria confusa , Jord. Bishop’s Castle, Salop, 13th June 1896. — 
W. H. Painter. 
Alyssum incanum , Linn. ‘Sp. PI.,’ 650 (1753). On waste ground 
by the side of the railway near Didcot, Berkshire, July 1896. — 
G. Claridge Druce. 
Erophila prcecox, DC. ? Rocks at Uphill, North Somerset, April 
1896. This brachycarpous form is the same as that sent to the Club 
by me from Farrington Gourney and Stone Easton, North Somerset 
(see ‘ Report’ for 1888 and ‘ Flora of Somerset’), and which, if not 
the true E. brachycarpa , Jord., is certainly near it. — Jas. W. White. 
E. prcecox , DC., var. Turfy wall-top, Tidenham Chase, West 
Gloucester, 5th March and 4th April 1896.— -W. A. Shoolbreb. 
“ Is this really so ? I doubt it. As I understand the plant, it has 
almost subrotund fruit.” — A. Bennett. 
Cochlearia officinalis , L. $ x micacea , Marsh. Spontaneous garden 
hybrid, Walton-on-Thames, 21st June 1896. The following is the 
history of this hybrid. I had grown C. micacea for several years ; the 
plants, which were originally sent me by the Rev. E. S. Marshall, and 
which were the produce of Perthshire specimens, having increased 
considerably from seed. I had not at any time had any other 
Cochlearia in cultivation at Walton until the winter of 1894-5, when 
Mr. Marshall sent me roots of several forms. These were all planted 
in pots and kept in a cold frame, but in the spring of 1895 several 
roots of C. officinalis were planted out close to the colony of 
C. micacea. Early in the spring of 1896 I noticed, among the 
numerous seedlings, six or eight of a new and unknown form, and it 
soon became apparent that these were probably hybrids between 
C. officifialis and C. micacea, the leaves being intermediate in their 
size, colour, cutting, and shape. (It may be objected that the leaves 
of C. micacea are sometimes larger than those of the hybrid now sent, 
and this may be true ; but it is not so in the hot, dry, sandy soil in 
which these plants were grown, and any comparison in this respect is 
applicable only where the three plants are grown under identical 
conditions.) As the plants progressed I found that ail the characters 
proved more or less intermediate; and finally the ripe pod, while 
showing considerable resemblance to that of C. micacea in shape, was 
distinctly reticulate-veined, though not so strongly as in those of the 
male parent. A very large proportion of the pods were quite sterile. 
The plants of C. officinalis , being recently established, did not flower 
very freely in 1895, and the seeds were all gathered ; hence I am able 
